Chess Tournaments

For the first time I decided to enter some online correspondence chess tournaments over the holidays. I've never done this before because I've preferred to play more friendly games against people I know. But I decided to broaden my horizons a bit and potentially improve my play.

I play at chessworld.net (link with referral code on right hand side) and entered three different tournament with mixed results:

Knockout:
The first tournament I entered was an 8 person, single match, open knockout tournament. 'Open' means it is open to anyone of any rating. The 8 entrants are seeded based on rating with #1 playing #8, #2 vs #7 and so on. #1-4 have white and must win to advance (i.e. Black can advance with a win or tie). I was seeded 4th with a rating of 1895 against a player with the handle 'Trapper D' from the USA. We quickly exchanged pieces and I ended up making a blunder in the endgame and resigned - thus quickly ending my first online tournament.

All-Play-All:
In this style of tournament every entrant plays two games (one as white, one as black) against each other entrant. You get 1 point for a win and 0.5 points for a draw - the entrant with the most points after all games are played wins. I chose a 4 player tournament, so I have siz games to play. So far I won one game with Black and drew another so I have 1.5 points. The other games I'm playing are against much stronger opponents - I hope to be able to salvage a win and a draw out of what is left.

Pyramid:
This isn't really a tournament in that there is no fixed end. Rather it is open to as many people that want to play. There are 7 levels to the pyramid - each with about a third as many people as the level below. You start on the 1st level, and advance by beating a player in the level above you. You can also be demoted a level if you lose to someone on the same level (or a level below you). I've won all three pyramid matches I've been involved in so far, so I'm on level 3. Below is the current distribution of players in the pyramid:

Level	Players
7	2
6	4
5	20
4	75
3	224
2	564
1	1487

Overall, I'm quite enjoying the tournament play - lots of chess boards to move on and lots of new and interesting people to play against.

Allergies and Sensitivities

Earlier I posted about a potential allergy our son may have to cow milk proteins. We've received a lot of conflicting advice from the Health Unit, a dietitian, and our family doctor. Ranging from give up breast feeding in favour of Soy formula, to avoid all formula and solely breast feed.

Kelly has been doing an amazing job of feeding Elliot exclusively by breast (still 7-9 times a day), but even with that his weight gain has not been great recently. He's six months now, which is when we're supposed to introduce rice cereal (pretty much the most bland tasting mush you can make). We started using a Nestle product that you can mix with breast milk which we tried - Elliot got diarrhea with it, but Kelly was on an antibiotic at the time so we weren't sure whether it was the cereal or if it was the drug getting through the breast milk.

So we waited a few days and tried a different brand (from Heinz) that didn't have any milk proteins and contained a lot fewer additives than the Nestle version. Again we were mixing with breast milk and thought everything was going well (no upset tummy, no red cheeks) - but today (day #3 on the cereal) he had 7(!!!) dirty diapers and now the poop is green and chunky - yuch.

We're not sure what's going on...but we're going to try a couple more days since he doesn't seem dehydrated (yet) and he has a Doctor's appointment on Tuesday morning.

We never had these problems with Maya - I didn't realize how easy it was back then.

Math is Fun

Here's another math problem to wrestle with while counting down to the New Year.

Find the smallest positive integer (base 10), composed entirely of the digits 0 and 1 that is divisible by 225.

Christmas Stuff

Well after a couple of days of dealing with an exceedingly excited 3 year old I'm ready to put fingers to keyboard to describe Christmas...

On Christmas Eve we visited my Mother-In-Law for dinner and had a pretty good time. Got home at 7:00 (about half an hour before Maya's normal bedtime) and immediately started the bedtime routine with no fussing (because, as she said, Santa won't come until we're all asleep). She got to bed in record time, skipping some of the normal elements of the routine and hunkering down under her covers with her eyes scrunched closed determined to fall asleep immediately. Which she did - there wasn't a peep from her room.

Elliot (our 6 month old) had a pretty good night. He woke up at 3:00 to be fed but was back asleep in his crib by 3:45. Maya woke up at 7:15 - which is a little later than normal for her. So far, so good.

We then proceeded down to the family room to see if Santa had come. Maya was so excited when she saw the 'big present' that Santa had left for her: a 'Rapunzel Castle'. She had seen this set up in Sears when we went for Christmas pictures of the kids three weeks ago and had talked of nothing else since. She asked for it in her letter to Santa, and when she saw Santa at the mall and at the TVWorks holiday party. So, unless we were going to teach her a life lesson about disappointment, she was going to get that castle. (more on disappointing your kids intentionally in another post, I think). Maya also got a watch in her stocking, but to my disappointment, she wasn't interested in it at all despite asking for a watch a number of times and always expressing an interest in my watch.

After about 30 minutes of play downstairs with the kids and the stockings we headed up for breakfast. Maya was too excited to eat and was jumping all over the place, but we managed to get something in her. Elliot was getting hungry at this point, so Kelly fed him, while Maya and I went back downstairs to play with the Castle. After eating Elliot fell asleep.

So Kelly, Maya, and I started opening the presents under the tree. Some highlights:

Me: Shoes, CD (Love - The Beatles), and an IOU for the Wii - Kelly couldn't find one in time and was very apologetic. I kept telling her that it was the thought that counts and I was just as excited for the IOU as actually getting one. Delaying the gratification is good too.

Kelly: Necklace, Sweater, PJs, CDs (Sam's Town - The Killers, Continuum - John Mayer)

Maya: Lots of Little Mermaid paraphernalia - I'm not comfortable feeding the Disney conglomerate, but I'm doing it anyway...don't feel great about it though.

Elliot: Clothes, a couple of big rubbery dinosaurs (T. Rex, Pleisiosaurus), some plastic animal toys that make noises when you move their appendages.


In the afternoon we went over to my Mother-In-Law's for turkey dinner. It was excellent. My sister in law and her new boyfriend were supposed to be there at 3:00. Dinner was at 4:00. At 4:30 she called to say that they went for brunch with the boyfriend's family and weren't hungry and were too 'tired' to come over. She told her mother that if she wanted she could bring the presents over to their place after 7:00 when she got her kids back from her ex.

I couldn't believe how inconsiderate and rude that was. My mother in law was almost in tears as she got off the phone. She went over later so her grandkids could have their presents - but there is still a lot of tension between the two of them. I would normally enjoy that tension, but it's almost beyond that now.

We got back home around 7:00 again, and once again, Maya was so tired she went straight to bed without any fuss and slept through the night.

A Sad Anniversary

A year ago today, the sister of one of my wife's friends was found murdered. She was found in the trunk of her car in the parking lot of the public school at which she taught in Nova Scotia. The police have yet to find the murderer and have not laid a single charge. Her name is Paula Gallant and the police are still looking for any tips that could lead to an arrest - there is up to $50,000 available for any such information.

In the year that has followed, her sisters have struggled to cope with this tragedy and maintain a relationship with their niece, who is almost 2 years old now. They have helped open an art room called "Paula's Place" at the school and have held auctions to raise funds and awareness of the investigation. But to this point nothing has led back to anything

Some more information can be found here, here, and here.

1000! revisited

It's been a few days since I posed the 1000! question and while cjg posted the correct answer he used a brute force approach. Here is a more formal solution:

The only way to get a zero at the end of a number is by multiplying by 10. The prime factorization of 10 is 5*2. The prime factorization of 1000! will contain 2^m and 5ⁿ. So the number of 0s at the end of 1000! will be the minimum of m and n.

1000! contains a factor of every number from 1 to 1000, so we start by counting how many of those numbers contain a factor of 5.

• Every 5^th number is a multiple of 5.
• Every 25^th number is a multiple of 25 - which has an additional factor of 5.
• Every 125^th number is a multiple of 125 - which has yet another factor of 5.
• And 625 has another factor of 5.

So, we get 1000! has 200+40+8+1 = 249 factors of 5.

We know every other number has a factor of 2, so 1000! trivially has at least 500 factors of 2. since 500>249, the number of zeros at the end of 1000! is 249.

Now, through all of this we assumed I was asking base 10. If, for interests sake I really meant everything in base 2, the answer would be derived identically:

In base 2, a zero at the end occurs for each factor of 10 (2 base 10). 1000 base 2 is 8 base 10.

• Every 2^nd number has a factor of 2.
• Every 4^th number has an additional factor of 2
• Every 8^th number has yet another factor of 2.

So we see that 1000! (base 2) has 4+2+1 = 7 zeros at the end.

Merry Christmas..

and happy holiday thoughts to anyone that is (un)fortuante enough to be reading my ramblings on the day before Christmas.

Come in Number 51, Your Time Is Up

This is post #51 and with it marks an end to my theme of titling posts with Pink Floyd song titles. I found it more difficult to come up with the title than most posts content. I even cheated in a few ways:

• I used an album title once (Animals)
• I used a Roger Waters solo track name once (What God Wants)
• I used duplicates a lot - something I wanted to avoid initially (See Emily Play 7 times, High Hopes 3 times, Money 3 times, Speak To Me twice)

Goodbye Cruel World

That's it. The Steelers have officially been eliminated from the playoffs following a 31-7 loss to the "over-rated" Baltimore Ravens. Too bad because Jacksonville lost again.

Kimota94 - you can once again watch football...me...I'm going to dip into the Christmas egg nog a little early.

Free Four

As in "One Two Free Four Five"...

Here are the five things not many people know about me that Peter suggested here:

1. I think of myself and am generally considered to be pretty good at math, but on the first two tax returns I submitted (ages 14 and 15) there were 'calculation errors' that Revenue Canada found and corrected on my behalf. Only if math teachers did that too :(
2. I have had my appendix, gall bladder, wisdom teeth, and tonsils removed.
   
3. I prefer a tray of cold cuts, fresh bread and a 'make your own sandwich meal' to pretty much any other kind of meal. It is always my choice when asked what I want to have to eat for a family get together - to the point where nobody asks me anymore.
4. I suck at first person shooters and real time war strategy games.
5. I believed in Santa until I was 9.
   

Brain Damage

Again, Kimota94 provided the first (and this time, only) correct response to the last math problems. Congratulations - go here to see his solution.

Here's a new problem for the holidays:

How many zeros are at the end of 1000! ?

(for those unaware of the ! operator - it is read "factorial". n! means the product of all numbers from 1 to n. e.g. 4! = 1*2*3*4 = 24)

A Saucerful Of Secrets

In response to Kimota94's post about math tricks...here's a few 'tests for divisibility' that you can use to impress your (geeky) friends.

1) An integer is divisible by 2 iff (that's if and only if for you non-geeks) its last digit is divisible by 2. If you didn't know this one already there's a problem ;).

2) An integer is divisible by 4 iff its last two digits are divisible by 4 because 100 is equivalent to 0 mod 4 (again, for the non geeks, mod is short for modulus meaning remainder (100/4 = 25 remainder 0, 0/4 = 0 remainder 0 - the two remainders are equal so 100 and 0 are equivalent mod 4)

3) A number is divisible by 3 iff the sum of its digits is divisible by 3.
Proof:
coming later

4) An integer is divisible by 9 iff the sum of its digits is divisible by 9 (casting out nines)

Proof:
Let x be an integer with digits a_ra_r-1…a₁a₀.
Therefore x = a_r*10^r + a_r-1*10^r-1+…+a₁*10+a₀

Now 10 is equivalent to 1 mod 9
Therefore, for all k > 0, 10^k is equivalent to 1^k which is equivalent to 1 mod 9.

Now look at x mod 9:
x = a_r*1 + a_r-1*1 +… + a₁*1 + a₀ (mod 9)
Therefore x is congruent to 0 (mod 9) (i.e. it is divisible by 9) when the sum of:
a_r+a_r-1+…+a₁+a₀ is congruent to 0 (mod 9)

Another way of saying it is that x is divisible by 9 when the sum of its digits is divisible by 9.

5) A number is divisible by 11 iff the alternating sum of its digits is divisible by 11.

Proof:
Mainly left to the reader. It is almost identical to the proof for 9s except 10 is equivalent to -1 mod 11 so the 10^k is either 1 or -1 depending on if k is even or not.

Shine On You Crazy Diamond

The "Change Bank" is one of my favourite SNL commercial parodies ever. My favourite line is: "People ask how we make money. The answer is simple: volume".

I found it on YouTube:

HIgh Hopes (part 3)

I know what you're all thinking: What happened to the Steelers' playoff chances with the NFL results this past weekend?

Well, I'm here to let you know that while still slim, their hopes are still alive. Oh...and a mistake from last week. Buffalo has the same record as the Steelers, but if they win their remaining games would beat the Steelers based on conference record. I must have missed that one, because I can't look at a team starting JP Losman at quarterback and think they have a chance at making the playoffs. Turns out their chances (while still slim) are better than those of the defending Superbowl champs.

The Good News: Pittsburgh won (easily) while Cincinnati, Jacksonville, and KC all lost.

The Bad News: Denver and the NY Jets won (although neither win was surprising against Arizona and Minnesota respectively.

The new scenario for the upcoming weekend:

• The Steelers must win against Baltimore this weekend
• Denver and Cincinnati play this weekend, both are 1 game ahead of the Steelers and both hold a tiebreaker against the Steelers, so unless they tie (very unlikely), the winner will beat the Steelers for a wild card spot. Which means there is only one left
• So Jacksonville must lose against New England (in New England)

Assuming Denver and Cincinnati don't tie, the Steelers have to hope that in the next two weeks they go 2-0, the Jaguars go 0-2, Denver loses their last game, and the Jets, Bills, and Titans lose at least once.

Simple, right. Just not very likely.

Speak To Me

Congratulations to Kimota94 and Vish, who correctly determined the answer to the last math question. See their comments for details...

Now for some algebra:

Two cars race around a circular track, in opposite directions, at constant rates. They start at the same point and meet every 30 seconds. If they move in the same direction, they meet every 120 seconds. If the track is 1800 m long, what is the speed of each car?

One Of My Turns

Another math problem...answer coming in a couple of days or after the first correct answer in the comments section:

Angle ABC = Angle DEA
length AB  = 3
 BC = 4
 AE = 1

What is the length of line segment ED?

When You're In

The NFL tie breaking procedures to get into the playoffs are some of the most complicated rules I've ever analyzed or seen discussed in such detail. Last year, at the end of the regular season, the Atlanta Falcons were playing a game and had to make a decision between going for a field goal for a tie or going for a touchdown to win. Because of 'playoff implications' they decided to go for the touchdown and failed - missing the playoffs. It turns out that had they played for a tie they would have made it into the playoffs. On the sidelines, following the end of the game, you could see the coach screaming into a cellphone. In the press conference afterwards he told the media that he was unaware that a tie would get them into the playoffs so he played for the win. When you read the tie breaking procedures it's no wonder he was confused.

Here they are (courtesy of espn.com with further explanations from me...)

Within a division:
1. Head-to-head (best won-lost-tied percentage in games between the clubs).
2. Best won-lost-tied percentage in games played within the division.
3. Best won-lost-tied percentage in common games.
Common games are against same opponents. Within a division, two teams will have 8 games in common excluding the head-to-head and division games.
4. Best won-lost-tied percentage in games played within the conference.
5. Strength of victory.
Best won-lost-tied percentage of opponents the team beat
6. Strength of schedule.
Best won-lost-tied percentage of all opponents
7. Best combined ranking among conference teams in points scored and points allowed.
Ranked 1-16 within conference for points scored and points allowed. Two rankings added, lowest number is 'best'.
8. Best combined ranking among all teams in points scored and points allowed.
Ranked 1-16 within conference for points scored and points allowed. Two rankings added, lowest number is 'best'.
9. Best net points in common games.
Two teams in the same division have 14 games in common including 2 head to head meetings.
10. Best net points in all games.
11. Best net touchdowns in all games.

TO BREAK A TIE FOR THE WILD-CARD TEAM
If it is necessary to break ties to determine the two Wild-Card clubs from each conference, the following steps will be taken.
1. Reduce to at most one tied club per division by applying the division tie breaker.
2. If more than one club is tied following step 1, see below.

Two Clubs
1. Head-to-head, if applicable.
2. Best won-lost-tied percentage in games played within the conference.
3. Best won-lost-tied percentage in common games, minimum of four.
4. Strength of victory.
5. Strength of schedule.
6. Best combined ranking among conference teams in points scored and points allowed.
7. Best combined ranking among all teams in points scored and points allowed.
8. Best net points in conference games.
9. Best net points in all games.
10. Best net touchdowns in all games.
11. Coin toss.

Three or More Clubs
(Note: If two clubs remain tied after third or other clubs are eliminated, tie breaker reverts to step 1 of applicable two-club format.)
1. Apply division tie breaker to eliminate all but the highest ranked club in each division prior to proceeding to step 2. The original seeding within a division upon application of the division tie breaker remains the same for all subsequent applications of the procedure that are necessary to identify the three Wild-Card participants.
2. Head-to-head sweep. (Applicable only if one club has defeated each of the others or if one club has lost to each of the others.)
3. Best won-lost-tied percentage in games played within the conference.
4. Best won-lost-tied percentage in common games, minimum of four.
5. Strength of victory.
6. Strength of schedule.
7. Best combined ranking among conference teams in points scored and points allowed.
8. Best combined ranking among all teams in points scored and points allowed.
9. Best net points in conference games.
10. Best net points in all games.
11. Best net touchdowns in all games.
12. Coin toss.

High Hopes

So the Baltimore Ravens won on Sunday - which means that the Steelers can no longer win the division. So as promised here is some detailed analysis as to how the Steelers can win a wild card spot in the playoffs.

Since the Bengals and Jaguars already have eight wins and both hold tie-breakers over the Steelers (and their respective division winners already have 10 wins), the Steelers must win their remaining three games and one of those two teams must lose their remaining three games.

Looking at the upcoming weekend, that means a Steelers loss or both a Bengals and Jaguars win means that the Steelers are eliminated from the playoffs. Other than that, it depends on what the other 7-6 teams do over the remaining three weeks. Lets look at the possibilities assuming that the Steelers are going to go 3-0 and there are no ties.


NY Jets: remaining games are against the Vikings, Dolphins and Raiders.
If the Jets go 2-1 over that three game span they will be tied with the Steelers. If the loss is against the Vikings then the Jets will hold the tiebreaker based on a better conference record, however if the loss is against Miami or Oakland, then the Steelers will probably win the tiebreaker based on "Strength of Victory"

Denver Broncos: remaining games are against the Cardinals, Bengals, and 49ers.
If the Broncos go 2-1 over that three game span they will be tied with the Steelers. Denver owns the tiebreaker against the Steelers based on a better conference record.

KC Chiefs: remaining games are against the Chargers, Raiders, and Jaguars.
If the Chiefs go 2-1 over that three game span they will be tied with the Steelers. However, the Steelers beat the Chiefs (handily) earlier this year, so they would win the tiebreaker.

Miami, Buffalo and Tennessee all have the same record as the Steelers. If Miami or Buffalo go 3-0 the Steelers would hold the tie-breaker because of a better conference record. However, if Tennesse goes 3-0 it is unclear at this point which team would win the tie-breaker because it would come down to Strength of Victory. I have a feeling Tennesee would win that however.

So what are some potential scenarios that see the Steelers into the post-season? See the list below. Note: I ignored the scenario where both CIN and JAX go 0-3 since that seems very unlikely (but could result in the Steelers getting the 1st or the 2 wild card spots)

Scenario A

JAX	0-3
CIN	1-2 or 2-1
KC	2-1 or worse
DEN	1-2 or worse
NYJ	1-2 or worse
TEN	2-1 or worse

Scenario B

JAX	0-3
CIN	1-2 or 2-1
KC	2-1 or worse
DEN	1-2 or worse
NYJ	2-1	with one of the wins against MIN
TEN	2-1 or worse

Scenario C

CIN	0-3
DEN	1-2	must beat CIN, lose to ARZ and SF
JAX	1-2 or better
KC	2-1 or worse
NYJ	1-2 or worse
TEN	2-1 or worse

Scenario D

CIN	0-3
DEN	1-2	must beat CIN, lose to ARZ and SF
JAX	1-2 or better
KC	2-1 or worse
NYJ	2-1	with one of the wins against MIN
TEN	2-1 or worse

What God Wants

I was listening to The Current on CBC Radio One this morning and the satirical opening was talking about Canadian retailers wanting to embrace the materialism of Christmas without alienating the Christians so they were launching a new campaign: W.W.J.B. : What Would Jesus Buy.

I laughed out loud!!

Fearless

In my post about motivation (Money) - I forgot one basic motivation that some people use to drive their efforts: Fear. It could be a fear of failure, or a fear of losing their job, or a fear of embarrassment. But any sense of fear resulting in you putting in the maximum effort you can to accomplish a task to reduce the feeling feared outcome is a source of motivation.

I'm not sure how ethical (or even legal) it would be for a manager to prey on an employees fears to coax their best effort...but not all managers out there are paragons of ethics (thinking Tom Parkinson, former CEO of Hydro One)

Yet Another Movie / Round and Around

I'm sure everyone is familiar with a dining room table that can expand by placing 'leaves' in either the centre or at the ends to give more surface area when needed. Normally these tables are rectangular or oval (only centre leaves for oval tables).

Well DB Fletcher is a furniture design company that makes a circular 'capstan' table that can expand when needed but maintain its circular shape. How? Well the mechanism is so ingenious they have a video expanding and contracting of it on their website that has to be seen to be believed.

To expand, the table is just rotated in one direction, the pie shaped panels separate and a star shaped centre piece is raised along with the missing pieces between the 'pie slices'. To contract, the table is simply rotated in the opposite direction.

(found the link from bOing bOing this morning)

Money

Get a good job with more pay and you're okay
But if you ask for a rise it's no surprise
That they're giving none away.
-- Money, Pink Floyd

My friend Kimota just posted an article on his blog about raises which got me thinking about money and how it relates to motivation with respect to your job. When I was younger and much more foolish I though that money in the form of bonuses and raises were the best forms of motivation. Having been on both ends (giving and receiving raises) now, I have come to the conclusion that motivation is very loosely tied to salary and raises if at all.

I think this is based purely on expectations. If you expect to get a raise of n% for whatever reason - good performance review, better than average quality of work, high inflation rate, impression from the manager, talk amongst peers, previous raises - but end up getting less than n% (or even if you get n%) then the raise is looked at in a negative light because it didn't meet your expectations. This is similar to going to a good movie that has been built up by reviews and recommendations as the best thing ever and then being disappointed because it was merely a good movie.

A bonus is slightly better than a raise in terms of motivation because, generally, it is not expected, it follows a particular accomplishment and it is a large sudden, influx of cash you can blow on whatever takes your fancy at the time. That feeling lasts a little while and may translate into better motivation at work. However, because these 'spot' bonuses are usually rare, the realization comes that because you got a bonus recently, no matter what you do now you won't be 'due' for another bonus for a long time - so the motivation trails off.

Instead of money, I've realized that the motivation has to come from the work itself. Motivation is a two part problem - you have to be motivated by something to perform well. And your manager has to figure out what motivates you and attempt to give you that motivating item regularly. Here are some of the things that motivate me and how a manager can ensure that I'm motivated:

Motivation Source	Solution
Challenge	Make sure you are challenged in your tasks
Praise/Recognition	Make sure you get positive reinforcement
Competition	Make sure you feel like you are in a competition and are doing well - but not winning
Accomplishment	Make sure you are aware of how completing your tasks will affect the product/marketplace/team
Chance for advancement/power	Publish the career development path opportunities, talk about continuous learning with employee, etc.

Run Like Hell

I just watched the Steelers easily beat the Browns. Man, if they played that consistently every game they would definitely be in the playoff picture.

During the game, Willie Parker set a new Steelers record for most rushing yards in a single game (223). He probably could have beat the NFL record, but was pulled out of the game with 12 minutes to go after the Steelers took a 27-0 lead.

During the game they showed a graphic depicting the turnovers for the season. This year they are -10, last year they were +7. They also showed the 5 teams with the worst turnover rates this year - the Steelers were tied for 3rd worst in the NFL.

The above photo is from AP Photo/Gene J. Puskar.

Mother

Recently I've been looking into TV ratings and parental control features for TVs and digital set top boxes. Not because, I want to censor what my kids watch - they are too young to be interested in anything worth censoring at this point - but for work reasons.

When watching TV you've probably noticed at the beginning of the show (and sometimes coming back from a commercial) an icon that provides some sort of 'rating' indication. It looks a little like this or this depending if you are in Canada or the USA (other countries may have something similar - I'm not sure). Since 2001, all TVs with a diagonal screen size of 13 inches or greater must be able to set rating limits based on these rating indications and if set, block the content from view until a PIN is entered. All this functionality is based on the v-chip technology

The Rating Systems
In North America there are four rating systems in effect that can be used to block TV content:

• The MPAA system we are all familiar with from movies (G, PG, PG-13, R, NC-17, Not Rated)
• The US TV system (None, TV-Y, TV-Y7, TV-G, TV-PG, TV-14, TV-MA) which has additional letter descriptions (FV - Fantasy Violence, V -Violence, S - Sexual Situations, L - Adult Language, D - Sexually Suggestive Dialogue)
• The English Canadian TV System (E(xempt), C, C8+, G, PG, 14+, 18+)
• The French Canadian TV System (E, G, 8ans+, 13ans+, 16ans+, 18ans+)

In Canada, a lot of programming is exempt from these ratings because of freedom of speech concerns including news programs, sports, documentaries, talk shows, informational programming, and music videos (!)

How Does the TV Know the Rating
The TV can't 'read' the screen to see the rating of the current program, instead it reads data from the VBI (a vertical blanking interval) where other information like closed captioning data is stored. If you have a really old TV where there is a knob to adjust the vertical sync of the picture you can turn it and see a black band instead of video. This black band actually contains data including the rating information for the program. Maybe a later post will explain VBI and all the information that can be pulled out of it.

Why Do I Care About This?
Well, I find it fascinating that the Cable TV industry puts such a high importance on parental controls yet often leaves the implementation of it as an afterthought. At work we often talk about 'little Timmy' seeing naughty video' when discussing potential optimizations to tune times. Nothing we do to improve the performance is acceptable if little Timmy could see or hear a flash of restricted content. But the enforcement and setting of parental controls in OCAP was omitted from the first version (added later as ECR778).

We support more advanced parental control features than just rating in our software as do most electronic program guide providers (block by channel, by title, by time of day as well as by rating) - yet currently there is no way to harmonize parental control settings set for VBI/V-CHIP ratings on your TV and the parental controls set via the guide UI you might be using for digital TV.

I'm thinking about ways to harmonize the two now so 'little Timmy' can't bypass the parental controls set in one system by starting to use the other system.

It Would Be So Nice

I am on an email mailing list for a company that produces high end chess boards and chess sets (the pieces) called the 'House of Staunton'. Each year around this time they have a promotion called the "12 days of Chessmas" where they offer a new special each day for twelve days.

This year they introduced a new line of chess sets called the "Gardena Art Chessmen". These pieces are a wonder to behold. If anyone is wondering what to get me for Christmas one of these chess sets or the Nintendo Wii would be great ;)

High Hopes

My friend Kimota hates the Steelers as much as I like them. He hates them so much in fact that he's been boycotting the NFL season thus far because they won Superbowl XL.

However, he declared that once the Steelers are eliminated from post-season contention, that he'd resume watching football. The sports media (and I as well, to be honest), have already written the Steelers off as a lost cause this year and have used the phrase, "all but mathematically eliminated" or something similar when referring to their playoff chances. But because they are not mathematically eliminated, let's take a look at the scenarios that would have to happen for the Steelers to make the playoffs this year.

Let's assume for the sake of argument that the Steelers can run the slate, and win their remaining 4 games against the Browns, Panthers, Ravens, and Bengals (three division games). That would put their record at 9-7.

Can they win their division?
They are currently 4 games behind the Ravens, so that would mean that we'd have to go to tie-breakers. Head to head they'd be 1-1, so within the division the Steelers would be 4-2 and the Ravens would be 3-3. So the Steelers would win that tie-break and beat the Ravens for the AFC North Division. However, what would have to happen to the Bengals? We've already assumed that they will lose to the Steelers. Their remaining games are against the Raiders, Colts, and Broncos. If they win 2 of those 3 games, it would be a three way tie for the division and Cincinnati would win the tie-break (Steelers and Bengals would have a 4-2 division record beating the Ravens 3-3, but the Bengals would either have a better record against common opponents or would have a better conference record than the Steelers depending on which two teams they beat).

So Yes they can win their division if:

1. The Steelers go 4-0 in their remaining 4 games AND
   
2. The Ravens go 0-4 in their remaining 4 games AND
   
3. The Bengals go 0-3 or 1-2 in their next three games
   

If they don't win the division could they get a wild-card berth?

Probably. There are currently 5 teams at 7-5 that are not division leaders (Jets, Chiefs, Jaguars, Broncos, and Bengals). The Colts and Chargers are division leaders with 10 wins, so even if they don't win their division, they'd beat the Steelers for a wild card spot. The other two division leaders have 9 wins.

Let's wait and investigate this possibility after this weekend's action.

Another Brick in the Wall pt. 2

Congratulations to my friend, and former co-worker, Vish, who recently scored an amazing 760 on his GMATs! Just to put that in perspective, the test is out of 800 and a score of 720 is normally in the 96-99th percentile!

He is applying to a bunch of the best business schools in the US (Wharton, Harvard, Dartmouth, MIT, ...) and has asked me to submit a couple of recommendation letters which I'm more than happy to do.

Good luck in getting in to the school of your choice Vish - and remember the recommendation when you're pulling in the big bucks!

We don't need no education.
We don't need no thought control.
No dark sarcasm in the classroom.
Teacher, leave those kids alone.
Hey, teacher, leave those kids alone!
All in all its just another brick in the wall.
All in all youre just another brick in the wall

Atom Heart Mother part b: Breast Milky

Yesterday we discovered that our 5 month old son has a sensitivity to cow's milk. A few weeks ago we started giving him some rice cereal which we mixed with water to supplement the breast milk he's been having exclusively up to that point.

We didn't notice at first but after about 7 days we realized that he had been a lot crankier than normal, not sleeping as well and had very red cheeks. Kelly did a little research in one of her many baby books and found that it these were all typical symptoms of a food sensitivity or allergy. We thought that maybe we had started to give him cereal too young (the health unit now recommends six months, but we had given our daughter rice cereal at four months without any problems) and his digestive system maybe couldn't handle it.

Everything was OK, but then we noticed that he hadn't gained any weight in a couple of weeks, so our doctor suggested that maybe it was a breast milk supply problem and that we should supplement with formula after each feed. We tried that and he started to get the same red cheeks and fussiness that we previously saw with the rice cereal.

We mentioned it to our doctor again who came to the conclusion that it was probably a sensitivity or allergy to the cow milk proteins in the formula and in the rice cereal. He then suggested we start on a soy based formula instead.

So out came the baby books again and we read that about 40% of kids who have an allergy or sensitivity to cow milk proteins will also have the same reaction to soy. So we called the health unit who basically suggested that we just stick with breast milk until he is 8 months old when we can introduce some solid foods. So now we are debating whether to try the soy formula, or just stick exclusively with breast milk. We will probably go with the formula after about a week when he's over the current reaction because he is just having a mild reaction and Kelly is pretty exhausted from all the feeding (7-9 times a day with 1-2 wakings in the night).

Some other things I learned about allergies in the past couple days:

• any allergy, not just food allergies, in a parent (including things like hay fever) is an indicator for potential food allergies in children. I always thought that food allergies were completely different from environmental allergies.
• 1 in 3 children that exhibit eczema as a sensitivity reaction to a food prior to six months of age (which my son did) will develop asthma or some other allergy by age 3.
  

See Emily Play #7

Well it's over. Kramnik lost with the black pieces today. His strategy of simplification at all opportunities by exchanging pieces was effective in that he managed to draw 4 games (and could have drawn the second if not for overlooking a mating attack by the computer) . He fared much better than Mickey Adams did against Hydra a couple of years ago.

The Fritz 4.0-Kramnik 2.0 score matched my prediction, but I envisioned a win and two draws for the human instead of four draws.

Kramnik walks away with half a million dollars and his reputation intact despite losing to the machine. It was unfortunate we didn't see him go all out with some sort of sacrificial exchange might have worked or might have failed quickly in the final game since he had nothing really to lose - a draw didn't help his cause. But that would have been against his style.

See Emily Play #6

The last game for Kramnik with White ended in another draw. With one more game to play, the score sits at Fritz 3.0 - Kramnik 2.0. So at best Kramnik can hope for a drawn match by winning the last game with the black pieces - no easy feat.

Fritz has proven to be a stiff competitor, but it hasn't launched any spectacular attacks. It defended precisely as you would expect a machine to do, and took advantage of Kramnik's mistake in game 2 to capture the only decisive match so far.

Despite the score, I would say I've been impressed with Kramnik's preparation and play, and disappointed with the computer.

Money

I just came up from my basement after listening to Money from Dark Side of the Moon on my new (to me) AV receiver. I've never had any fancy stereo equipment before - I couldn't justify the expense since, with my hearing, I can't really tell the difference between a tape and a CD. However, last week I happened to find an 'offer I couldn't refuse'.

My wife works at an insurance company and recently an electronics store they insure had a claim when some water leaked from the roof onto the display area. The insurance company paid the claim and took the now un-sellable merchandise from the insured. They then offered all that equipment in a silent auction to the employees. There was a lot of fantastic stuff there - but the mantra is 'buyer beware' as this stuff is salvage from an insurance claim.

We bid $175 on a Sony Home Theatre system (the DAV-FX900W) which retails for $1200 (Canadian) and won it. Great! Now there are a few things missing that I didn't know about ahead of time:

• no remote control - I have a Harmony 880 already
• no AM or FM antennas - I don't listen to the radio very often outside of my car
• no 'table' speaker stands, just floor stands - I'm going to mount the speakers on the walls anyway
• no 'calibration mic' for simple audio configuration - I'll do it the 'hard' way
  
• no surround amp/IR receiver - this is the one that hurts a little

A key feature of this particular system is that the rear surround speakers don't need a wire back to the main unit. Instead Sony has come up with some infrared way of transmitting the audio information. However, to make this work, the left rear speaker needs a power source and an IR receiver cable, neither of which I have. I've looked into getting the part from a Sony service department but it looks like it will be more than I paid for the whole system to this point. So I guess I'll have to have the speaker wires routed to the back of the room somehow.

Getting back to where I just was, I set up the system in the basement this evening after the kids went to bed, just to test it out and the first CD I put in was Dark Side of the Moon. Now I can't wait to move it up to the family room and hook it up to the rest of the components - but that's going to wait until Christmas (my present just came a little early).

Massed Gadgets of Hercules

Google is a pretty fantastic outfit these days. They offer so many different products other than search it's hard to keep track . Here are some I use:

• Analytics - to track if anyone is actually reading this blog
• Blogger - this blog (duh)
• Gmail - awesome web based mail
• Desktop - client side search and more
• Gmail Alerts - automatic email when google news sees a phrase I've registered
• Calendar - web based outlook type calendar
• Page Creator - my homepage
• Personalized Home - replacement google main page with lots of web content at a glance
• Talk - IM client - don't really use this but I have an account
• Google Maps - my first choice for getting directions
• Google Video - almost as good as YouTube - but now that's part of Google
• Froogle - comparison web shopping

Other products I've heard about but haven't used yet

• Docs and Spreadsheets
• AdSense
• Google Earth
• Picasa - photo app

And I'm sure there's plenty more.

See Emily Play #5

Kramnik and Fritz had another draw yesterday. Initially it looked as though the computer would win easily as it had a significant advantage in terms of development. But Kramnik managed to simplify the position by exchanging pieces and lead the computer into a Bishop vs Knight endgame.

He was then able to construct a fortress and was happy to move his king back and forth between two squares until the computer had to offer a draw because it was unable to penetrate Kramnik's defense.

I must admit Kramnik is doing much better than I had expected...or maybe it's the computer that's doing worse. Either way it is now Fritz 2.5 - Kramnik 1.5 with two games remaining.

Bring the Boys Back Home

Worst quote about the Steelers anywhere:

"[T]he lamest defending champs in recent memory. The 2006 Steelers team picture should just be a frozen turd at midfield. "

-- Bill Simmons, ESPN Page 2

Oh well. like I said earlier...5 year exemption from criticism for the defending Superbowl champions.

Animals

OK - that's not a song title - but it is the title of a 1977 album by Pink Floyd - and I'm going to do a little review of it now. Animals was the first Pink Floyd CD I bought...sure I had watched The Wall, and I had probably listened to most of Dark Side of the Moon, but I wouldn't consider myself a fan by any stretch of the imagination.

I had got a Sony Discman for Christmas one year, and went boxing day shopping for some CDs with my Dad and brother. One store we went to was having a sale where they were charging $1 per song on the CD (well before iTunes came up with that pricing model). My Dad noticed a copy of Animals, he showed it to me by saying - "That's the Battersea Power Station...I used to drive past that every day". I took it from him and saw it was by Pink Floyd - but better yet it only had 5 songs - so $5! I bought that and about 10 other CDs...but for the next month Animals was all I listened to. It was the album that got me hooked on Pink Floyd.

Similar to George Orwell's Animal Farm, Pink Floyd used animals for metaphors of different classes of people. Dogs - Business leaders, Pigs - Politicians, Sheep - the working class.

Pigs on the Wing (part one)
A short, acoustic song with a catchy melody. This is the closest thing to a love song that the Floyd put on the album. Apparently Roger Waters wrote it (and part two) for his wife at the time. When I started searching for Pink Floyd stuff on the internet I found out that the 8 track version of Animals had a different version of Pigs on the Wing where the two parts were linked by a guitar solo by Snowy White. I like that version even more than the original two parts on the CD.

Dogs
When I first listened to Dogs I was blown away. It started out normally enough...the lyrics were fantastic...then half way through the 17 minutes dogs started barking. This was something I was not expecting as I had never really listened to anything like it before. When the song ended, I just had to listen to it again.

The song is obvious enough in that it is about big business and the complete lack of soul and feeling business people have about the working class on whose back they have made their fortunes.

Originally written and performed during the Dark Side of the Moon tours of 1974-5, Dogs was originally titled "You Gotta Be Crazy". The lyrics at the end of Dogs have a certain similarity to the style of lyrics in Eclipse at the end of Dark Side of the Moon:

Who was born in a house full of pain
Who was trained not to spit in the fan
Who was told what to do by the man
Who was broken by trained personnel
Who was fitted with collar and chain
Who was given a pat on the back
Who was breaking away from the pack
Who was only a stranger at home
Who was ground down in the end
Who was found dead on the phone
Who was dragged down by the stone.

The song was originally intended for the album that became "Wish You Were Here", but Roger Waters had different ideas. This may have been one of the starting points in the division between Waters and Gilmour.

Pigs (Three Different Ones)
In Pigs (Three Different Ones), Roger Waters starts by criticizing the greed and behaviour of businessmen - continuing on where Dogs left off. But in the second verse forward it targets more of the political figures of the day. Specifically it seems to me that his disdain for Maggie Thatcher so evident in 'A Final Cut' started well before the Falkland Islands 'war'. Also, the lyrics are critical of a group of politically connected parents that were advocating the censorship of music for being to sexually overt including music by Pink Floyd.

The line 'Ha Ha, Charade You Are' is now a common insult used on South Park.

Sheep
Sheep is my favourite song on the album. It's a view into the philosophy and viewpoint Roger Waters has about the working class. Like Dogs, this song started life as a song the Floyd performed on the Dark Side of the Moon tour and was originally called Raving and Drooling - one of my all time favourite titles!

Part way through the song, there is a satire of Psalm 23 which, for some bizarre reason, caused Tipper Gore and the PMRC to declare that Pink Floyd were Satanists!?

"The Lord is my shepherd, I shall not want. He makes me down to lie. Through pastures green, He leadeth me the silent waters by. With bright knives, He releaseth my soul. He maketh me to hang on hooks in high places. He converteth me to lamb cutlets. For lo, He hath great power, and great hunger. When cometh the day we lowly ones, Through quiet reflection, and great dedication. Master the art of karate. Lo, we shall rise up. And then we'll make the bugger's eyes water."

It doesn't get much better than that...


Pigs on the Wing (part two)
The conclusion of Pigs on the Wing from the first track. These two tracks seem to have little to do with the 'meat' of the album, although Roger does refer to himself as a 'Dog' and there is a mention of the 'stone' dragging him down that features in Dogs. When I listen to this album now, I generally just listen to the middle three songs, and sometimes the 8 track version of Pigs on the Wing.

See Emily Play #4

Game three of six is over and Kramnik managed another draw. He had white and they played an Open Catalan opening from which he had many attacking opportunities. The computer defended precisely (as they typically do) and managed to hold out for a draw.

So far in the three games, Kramnik has shown excellent preparation and played his openings very quickly allowing him plenty of time for the long ‘thinks’ he needs up to move 40. This has helped him play well in the middle game. Where he has faltered is in the end game where twice in the three games he has missed opportunities to either force a draw in the second game (which he ended up losing), or put a lot of pressure on the computer in the first game.

Score: Kramnik 1.0 – Fritz 2.0

What Shall We Do Now?

Part of my role at work is ‘software architecture’ which is a somewhat nebulous term and often crosses in to software design. In an agile environment it can’t cross that boundary, however, because it is up to the teams delivering the feature to buy into and create the design for the software. So with the help of the book “Software Systems Architecture” we’re now defining the architecture as a process to find unwritten requirements, constraints, questions, and assumptions that will restrict the design space to only those designs that meet all the criteria and constraints.

The book is quite good, although it is written from a more ‘waterfall’ type mentality. The ideas it presents are geared towards how to effectively communicate an architecture. The authors present a set of six distinct 'views' of the system. Each view is targeted at a different set of stakeholders (which may include the end user, operators, developers, installers, third party developers, etc.) and the intent is to present only the information the stakeholder cares about in the view. The book describes a template for each view including examples of what one is to consider, a checklist, and a section of common mistakes and pitfalls which is quite useful.

The views they describe are:

• Functional: Describes the systems functional elements, their responsibilities, interfaces and primary interactions
• Information: Describes how the system stores, manipulates, manages and distributes data
• Concurrency: Maps functional elements to concurrency units to identify where parallelism can and will occur
• Development: Describes how the architecture supports the development process including building, testing, and maintaining the system
• Deployment: Describes the target environment into which the architecture will be deployed including processing nodes, network interconnections, bandwidth availability, and disk storage requirements
• Operational: Describes how the system will be operated, administered, upgraded and supported after initial deployment.

In addition to the viewpoints, the authors identified some common non-functional qualities of a system and recognized that meeting those qualities will affect more than one view. These qualities include things like performance, security, availability, and scalability. For each of these qualities there is an associated Perspective that the book outlines.

So I'm experimenting with this format by trying to describe a current feature (EPG Data Delivery) along with an upcoming required enhancement to that feature. We'll see how it goes...

Green is the Colour

Yesterday there was a federal by-election in my riding (London North-Centre) and for the first time I voted for a party other than the Conservatives/Progressive Conservatives. That's right - I went green. My former MP (Liberal Joe Fontana) decided to resign his position to run for Mayor of London and lost to the incumbent Anne-Marie DeCicco-Best.

The real candidates for the by-election were:

• Glen Pearson (Liberal): a former fire-fighter and founder of the London Food Bank
• Dianne Haskett (Conservative): the former mayor of London
• Megan Walker (NDP): I know very little about her, but I think she may have been a former broadcaster or journalist of some kind
• Elizabeth May (Green Party): The Leader of the Green Party of Canada

I didn't vote for the Conservatives because, as the former Mayor Dianne Haskett showed intolerance and disdain for gays/lesbians by trying to stop the Gay Pride parade.

I didn't vote for the Liberals for a couple of reasons. The Liberal party seems very arrogant. I can't stand Dalton McGuinty and the provincial Liberals because of their complete disregard for their election promises and the Health tax. That feeling bleeds to the federal liberals. And I didn't even get to the corruption rampant through the former Liberal federal government.

I'll never vote for the NDP.

So that left Elizabeth May and the Green Party. They campaigned fairly. The leaflet I read describing their policies seemed reasonable. And she is the leader of the party.

Results:
I always expected the Liberals to win - which they did with almost 35% of the vote. However, I was pleased to see the Greens came in second with almost 26% of the vote. Congratulations Glen Pearson on winning, and to you too Elizabeth May on a well run campaign and a bright future.

See Emily Play #3

Game 2 in the Man vs Machine match ended in a win for the Machine.

Kramnik had black and it started with a fairly strange opening focusing on the Queen side. It looked even to me for the majority of the match, then Kramnik made a slight mistake in his defense which Fritz took advantage off without mercy. It ended with a Queen/Knight mating net on the black King.


Score so far: Fritz 1.5 - Kramnik 0.5

Arnold Layne

I was scanning YouTube while waiting for a plane last month and ran across a series of videos from the early days of Pink Floyd - back when Syd Barrett - the Crazy Diamond himself - was the driving creative and musical force.

Seeing some of these videos really made me smile and appreciate the personalities in the band in their formative years...

This is the Arnold Layne video - their first single.



Here are links to videos for Scarecrow and Apples and Oranges

Sorrow

The Steelers lost again today. Not only did they lose, but they were shut-out 27-0 by the division leading Ravens. So the Steelers are now all but mathematically eliminated from the playoffs. They are 5 games behind the division leaders with five games to play and their best possible finish is 9-7. Considering an 11-5 AFC team missed the wildcard last year, it is almost guaranteed the Steelers will be done at the conclusion of the regular season. The team is very similar to last year's squad, but the biggest difference seems to be the number of turnovers the Steelers are giving up. They've already had 3 or 4 more interceptions this year than they did all last year.

Oh, well...normally I'd be depressed about that. But given that they won the Superbowl last season, they've earned a 5 year exemption from criticism in my books.

Now I'll just root for good football...and against the Colts, Bengals, Ravens, Broncos, Cowboys, Redskins and Falcons...

Wot's...Uh The Deal?

Hardly had any time to post today...it's been crazy since waking up at 6:15.

There was a smell of rotten eggs in the basement this morning that I noticed at around 8:15 so we kind of freaked out and reported a gas leak. The whole family got up and out of the house by 8:30 in our PJs. Turns out all north east London smelled like gas, not just our house, so we ended up driving around for about an hour waiting for some news. Luckily it turned out to be a leak of the additive companies add to the odourless natural gas so you can detect leaks...how ironic.

Then I spent the rest of the day between putting up Christmas lights, raking leaves, and cleaning the outside. Lots of fresh air and now I'm whipped.

Time to go to bed....

See Emily Play #2

Game 1 in the Man vs Machine match ended in a draw. Kramnik had white. Both side seemed content to exchange pieces at will. No real chances on either side. It seemed as though Kramnik wanted to be sure to get at least a draw in his match. Hopefully there will be better matches to come.

I don't think I mentioned this before, but if Kramnik wins he gets $1 Million. If he loses or the match ends in a draw he gets $500,000. Not bad either way...

See Emily Play

OK...not Emily exactly...starting tomorrow there is a 'Man Vs. Machine' chess match featuring Vladimir Kramnik against Deep Fritz 10.

Kramnik is the current FIDE World Chess Champion and the 14th Classical Chess Champion (like boxing Chess has splintered due to political/organizational disagreements and there are multiple 'titles' a player may hold). He is coming off a successful defense of his Classical Chess Championship against Vesselin Topolov and is playing better than he has in three or four years.

Deep Fritz 10 is the latest offering from chessbase.com and is sure to prove a mighty opponent for Kramnik. At the championship, Fritz will be running on a standard Intel PC with 4 processors.

The format is 6 games over 11 days of play. I don't think Kramnik stands much chance of winning. In fact I'll make a prediction that he will win 1 game and draw 2.

You can follow the action online at either playchess or at the official site.

A Great Day For Freedom

Happy Thanksgiving to any Americans that may be reading this.

My favourite aspect of American Thanksgiving is football. Even though I'm Canadian, quite often I'll take American Thanksgiving off so I can watch football. I haven't done so much in the last few years because I have a TV on my desk where I work so I've been able to watch it there. But I decided to take it off this year because of HD and just to use some vacation time.

The tradition of Thanksgiving Day games is pretty cool however there are a couple of problems I have with it. It always involves home games for the Detroit Lions and Dallas Cowboys. In recent years both of these teams haven't been very good, so the Thanksgiving Day games, as a result, haven't been very good. Secondly, because the games follow a normal week the preparation time is much shorter and the visiting teams are at more of a disadvantage. If you analyse the results in the modern era of football (since the forward pass has become popular), the home team wins about 60% of the time. However, the home team wins games on 'short weeks' (where the opponent has less than one week to prepare) 67% of the time. Normal short weeks are fair in that it rotates around from year to year as to who plays where following short weeks. The exception is for Detroit and Dallas who are guaranteed a home date following a short week each year. Why doesn't the NFL keep the tradition alive by allowing Detroit and Dallas to play each Thanksgiving, but rotate home and away games for each team for fairness, I don't know.

Interstellar Overdrive

Following the 'Star Trekking' post, Peter J mentioned a Doctor Who themed song he was reminded of.

I loved watching Doctor Who as a kid, and actually it was the source of the first nightmare I can remember. I watched an episode with my dad that featured the Daleks with their robotic 'Exterminate' catchphrase. I did not sleep well at all that night.

Anyhoo...one of my favourite parts of Doctor Who is the theme music. The BBC has been kind enough to put up a web page that lets you play with samples from the Doctor Who theme and create your own. They call it the Radiophonotron and it is lots of fun to play with. Give it a try if you have a few minutes...


Oh yeah...and Pink Floyd sampled some Doctor Who theme music in "One Of These Days" when they performed it live in the Division Bell tour...

Raving and Drooling

The Nintendo Wii is AWESOME!!!

A co-worker brought one in today and I played Tennis, Golf, and Boxing on it. It was so much fun! The controller is great. Golf was by far the best and most enjoyable. Boxing seemed a little confusing and I wasn't sure that all the motions I made with the controller were being recognized. It was still fun, but I felt a little self-conscious "shadow" boxing in front of a group of people sober. I only played one point in a Tennis match and there was a big lag between my swing and the character swinging. I'm sure you'd get used to it with more practice though.

I know what's on my Christmas list now.

Biding My Time - The Answer

If you haven't read the original post where I asked the question, you may want to before reading the answer below. This question was asked of me in a telephone interview, and I managed to work out the formula below on the phone in about five minutes. I didn't go the extra step of performing the derivative and setting to zero on the phone - the interviewer was happy enough with the formula.


If you only had one marble/ball/egg, whatever, you would be forced to go serially from floor n to floor n+1 until it breaks and then floor n would be the answer. Since you have two marbles/balls/eggs, whatevers, you can use the first one to narrow down the scope. The question is how to do that narrowing most efficiently.

Assume you are going to divide the 100 floors evenly into groups of n floors, then the first marble can be dropped on every nth floor and when it breaks, the final marble only has to check the n-1 floors between the last two floors checked.

Let d be the number of drops and n be the number of floors per section for the first marble. In the worst case for d (which is what we care about) then:

   d = 100/n + (n-1)

So now to find the minimum d with respect to n, we need to use some high school calculus to take the derivative and set to zero. This yields:

  dd     -100
  --  =  ----  + 1
  dn      n^2

  -n^2  = -100

   n = +/- 10

Since only positive numbers make sense in the scenario, we can see that we should drop the first marble from every tenth floor and then the worst case for the number of drops to find the floor in question is 19.

Astronomy Domine

In reading Kimota94's decscription of Pop Culture References, he mentioned the phrase "He's Dead, Jim" which instantly reminded me of the song "Star Trekking" by The Firm. I found the video with YouTube and it's worth a look...

Signs of Life

This past weekend there were 11 NFL games on at the 1PM Eastern time slot. FOX only had the TV rights to show a single game and chose one of the games in the later timeslot. I live in the Rogers broadcast area and with timeshifting and HD had access to about 10 different channels (CBS affiliates, CBS HD, and Global) showing games. However, all of the channels were showing the same game (Pats at Packers), despite what the guide said. That game was the most one-sided of all (35-0).

There were a lot of close games, including my favourite, the defending Superbowl champion Pittsburgh Steelers against the Browns in Cleveland.

Unfortunately I had to watch highlights only. The Steelers were trailing the entire time, and were it not for some heroics from "Big" Ben Roethlisberger, they would have lost. However, they managed to score 21 points in the fourth quarter to win 24-20. At the end of both halves the Browns launched passes to the end zone and in both instances, the Browns receiver had a decent chance to come down with the ball. Luckily both times they failed.

So the Steelers are now third in their division at 4-6 trailing Baltimore at 8-2 (whose record is more flattering than their play) and Cincinatti at 5-5.

There are some signs of playoff life - but the Steelers have to win their remaining games - not very likely based on their performance thus far.

Lucifer Sam

I love cats. My cat is 16 years old, is deaf, and has thyroid and kidney problems.

Because she is deaf, she meows at loud volumes and incessantly because you can’t hear you talking to her.

She’s had thyroid problems for a couple of years, and because she won’t take the pills for the condition I’ve been giving her half a medicated chicken-flavoured chew twice a day for 2 years. The chews cost about $70 for a months supply. If I forget to give her a chew, her typical response is to vomit bile on some carpet two or three times in the night….so I try not to forget.

Because of the thyroid medication she’s developed a kidney problem which has worsened dramatically over the past couple of months. She’s to the point now, where sometimes she can’t make it to the litter box and has peed in various places in the house – the mat in the entrance way, my daughter’s playroom, and such. When this happens it sucks! Even with scrubbing and the cleaner we use it takes a while for that smell to dissipate.

It’s to the point now where we’re restricting her to non-carpetted areas – luckily that’s the majority of the house.

Biding My Time

This is a lot later than I thought I'd have my first math related post. This is the first of many.

Consider a 100 storey building, each floor has a balcony. You have 2 marbles, and you are trying to determine the highest floor from which you can drop a marble without it breaking. What strategy would you use to minimize the number of trial drops you have to make to determine this height? Using that strategy what is the most number of drops you would have to make to determine the floor in the worst case?

On Thin Ice

Kelly and I got our first 'night' out since our son was born in June. We just got back from seeing the London Knights beat the Erie Otters 9-1 with another couple. The game was never close, but it was exciting and there was lots of scoring (obviously). The Knights outshot the Otters 51-40. A player named Patrick Kane made a really good impression on me. He was really fast, controlled the puck well and scored a nice goal on a backhand that he flipped to the top of the net when the entire arena though he was going to carry the puck around the net.

There was a big fight in the second period that saw the two players go to the ice twice and get back up before the refs broke it up.

One Slip

As I mentioned on a previous post, I play chess online sometimes. If you want to replay a game I'm pretty proud of, go here and you'll see me beat Pete Baljet (one of my co-workers).

He and I are pretty evenly matched most of the time, but he made a blunder (one slip) in this game that let me finish him off pretty convincingly.

Speak To Me

My daughter is three years old, and, among other things, we're trying to teach her to say nice things about people (i.e. compliment them). When I watch her, I can see her decide to say something nice normally something like "I like your hat" or "Your teeth are shiny". But it doesn't always come out right.

The funniest occurence was when she saw my wife getting ready to breast feed our son. She pointed to my wife's breasts and said, very seriously, "I like those!"

Us and Them

In this case, by Us and Them, I mean the black and white sides in a chess game.

I love chess. I love playing it. I love analysing my previous games. I love 'watching' professional games. I love reading about it. I love reading about professional players.

I think the reasons I love chess, are fairly simple. It is a struggle between two initially equal forces and, like Newton said, for every action there is an equal and opposite reaction. It amazes me that in the hundreds of thousands of professional games played, players still break out novel moves after 7 or 8 reasonable starting moves. After one of these novel moves, if the resulting position looks promising, an army of people start analysing the novel move and it gets added to encyclopedia and repetoire waiting for people to find the appropriate refutation.

Computationally we're at a point where a cheap PC or handheld device has enough power to be able to beat 99% of people using brute force. That's unfortunate, however, now chess programs are able to teach and train beginners. It's to the point where even professionals regularly use computers to analyse positions and are a key part of their training regimen. I use Fritz from ChessBase to help me train. And I play online at playchess.com for complete games or letsplaychess.com for 'correspondence' style games

Despite my love for the game, and my above average memory in most aspects of my life, my chess skills are probably just average to slightly below average. I think the big reasons for this is that I haven't played enough and I get too focused on my own plans and strategy and sometimes blunder a piece away because I can't give up my plan. It's something I'm working on...

If anyone out there ever wants to play a friendly game - I'm always up for it.

The Great Gig In The Sky

Over the weekend I found out that a co-worker's baby passed away. The baby was born with a genetic disorder that 'was not compatible with life'. He was expected to live a week or two, but actually lived for just over 3 months.

The obituary mentioned simple joys like seeing him smile, watching trees and birds with him and just spending precious moments together, knowing that they wouldn't last long.

Angel's death has touched me more than any other in my life, even though I never met him. I can't imagine what his parents are going through and how they can cope right now. I just know that I wasn't able to go to the funeral because of the emotions I felt - I would have lost it.

Since reading the obituary I've cried at least twice a day thinking about him and his parents. I have hugged my kids more, told them that I love them more often, and enjoyed my time with them more in the past three days thanks to Angel.

Because of his death, I will not take for granted how lucky I am to have my family. And I will be giving to the trisomy foundation in Angel's memory.

Welcome To The Machine

I've recently been reading the blogs of a few friends of mine (here, here, and here) , and instead of ranting in their comments section or verbally to them, I decided to start a blog too.


I don't think I'll be as verbose or as frequent a poster as Kimota, but I hope not to leave this blog abandoned after just a couple of posts.