Puzzler: The Hackers’ Hats
Posted by Robin Thomas on Jun 13, 2009 in Testing Methodologies |
Three hackers were competing to see which was the smartest. They took their debate to their guru, who proposed a test. They were shown five hats: three white and two black. Each hacker was blindfolded, and a hat placed on his head. While still blindfolded, and before their guru could even hide away the remaining hats, the wisest of the hackers announced the color of his hat.
What was his reasoning?
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His reasoning could be by announcing what hat he had, he expects those other two to announce theirs too. As a result, he’ll know exactly what the other two hats are.
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