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Math

Why Computers Suck At Math 626

antdude writes "This TechRadar article explains why computers suck at math, and how simple calculations can be a matter of life and death, like in the case of a Patriot defense system failing to take down a Scud missile attack: 'The calculation of where to look for confirmation of an incoming missile requires knowledge of the system time, which is stored as the number of 0.1-second ticks since the system was started up. Unfortunately, 0.1 seconds cannot be expressed accurately as a binary number, so when it's shoehorned into a 24-bit register — as used in the Patriot system — it's out by a tiny amount. But all these tiny amounts add up. At the time of the missile attack, the system had been running for about 100 hours, or 3,600,000 ticks to be more specific. Multiplying this count by the tiny error led to a total error of 0.3433 seconds, during which time the Scud missile would cover 687m. The radar looked in the wrong place to receive a confirmation and saw no target. Accordingly no missile was launched to intercept the incoming Scud — and 28 people paid with their lives.'"
Announcements

Submission + - Internet's Largest Internet Forum to Shut Down

Neo_Mushroom writes: "From the article: "2channel, the largest Internet forum in the world and an ISP in Japan, has been shuttered by a Japanese court ruling in a civil slander case. The corporation managing 2channel was declared bankrupt and its assets will be seized. The ISP will close on January 15th, and the future of the famous "mega-BBS" is uncertain."

For those who've never heard of 2channel, the BBS is massively popular, recieving over 2.7 million posts every day."

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