Notes

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Why video runs at 29.97 frames a second Colour television needed a gap, so the frame rate was lowered by a tenth of a per cent. Timecode has been apologising for it ever since. Decide the sample size before you look Checking a test each morning and stopping when it turns significant will produce a significant result from nothing at all. An extra payment is all principal A normal payment is mostly interest for years. Anything above it goes straight at the balance, and takes all that balance’s future interest with it. Why 0.1 plus 0.2 is not 0.3 A tenth cannot be written exactly in binary, in the same way a third cannot be written exactly in decimal. What a p-value does not mean It is not the chance your hypothesis is wrong. It is the chance of data this extreme if it were right. The regex that hangs your server Nested quantifiers on a string that nearly matches can take exponential time. It is a one-line pattern and a real outage. CST is three different time zones It means US Central, China Standard and Cuba Standard. Abbreviations are ambiguous, and that is why software never uses them. Seven shuffles, and not fewer A deck riffled three times still carries most of its old order. The number where it stops mattering is seven. Twenty-three people is enough The odds of a shared birthday in a room of 23 are better than even, because 23 people make 253 pairs. Does order matter, and can it repeat? Two questions pick the right counting formula every time. A podium is 720 and a padlock is 1,000. Lorem ipsum begins in the middle of a word It is mangled Cicero from 45 BC, and "Lorem" is the tail end of "dolorem". The corruption is the oldest part of it. The grid crop is not the feed crop A tall post is shown square on a profile. Design for the feed alone and the profile grid quietly cuts the top and bottom off everything.

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