Friday, March 15, 2013
Mystery Malware “Warhead”...
The Trojan named “Gauss” has a mysterious encrypted warhead whose purpose has not yet been deciphered. But security folks think it's likely something awesome – the cyber-spying equivalent of a nuke...
Non-Transitive Dice...
With ordinary cubic (six-sided) dice, each side has a different number of dots on it, from 1 to 6. If you roll two ordinary dice in competition, over the long term the two dice will be exactly tied.
But it is possible to construct dice with other numbers on them. For example, imagine three dice with numbers as follows:
Die A: 1:1:1:1:1:1
Die B: 2:2:2:2:2:2
Die C: 3:3:3:3:3:3
Now these would certainly be boring dice to play with! But consider this: if the dice A & B were competing, B would always win. If dice B & C were competing, C would always win. If dice A & C were competing, C would always win. These dice exhibit transitive behavior: B beats A, and C beats B, therefore C beats A.
Now consider this set of dice:
Die A: 3:3:3:3:3:6
Die B: 2:2:2:5:5:5
Die C: 1:4:4:4:4:4
In this case, A will beat B, and B will beat C. You might say to yourself “Therefore A will beat C” – but if you did, you would be wrong, because C will beat A!
Read all about this and other interesting properties of Grimes' Dice...
But it is possible to construct dice with other numbers on them. For example, imagine three dice with numbers as follows:
Die A: 1:1:1:1:1:1
Die B: 2:2:2:2:2:2
Die C: 3:3:3:3:3:3
Now these would certainly be boring dice to play with! But consider this: if the dice A & B were competing, B would always win. If dice B & C were competing, C would always win. If dice A & C were competing, C would always win. These dice exhibit transitive behavior: B beats A, and C beats B, therefore C beats A.
Now consider this set of dice:
Die A: 3:3:3:3:3:6
Die B: 2:2:2:5:5:5
Die C: 1:4:4:4:4:4
In this case, A will beat B, and B will beat C. You might say to yourself “Therefore A will beat C” – but if you did, you would be wrong, because C will beat A!
Read all about this and other interesting properties of Grimes' Dice...
Vannevar Bush's “Memex”...
Some historians credit Bush's Memex as the original idea that spawned the Internet's World Wide Web, and other computerized knowledge bases...
Kiiking...
Estonia has several interesting sports that either originated there, or were popularized there. Kiiking, for example (watch video below). Or wife carrying. Or sauna rallying. Or beer swilling. I could go on...
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