In Sid Meier's Civilization you can only build catapults after you research math... | Hacker News

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smutticus on May 14, 2013 | parent | context | favorite | on: Every odd number greater than five is the sum of t...

In Sid Meier's Civilization you can only build catapults after you research mathematics.

saraid216 on May 14, 2013 [–]

http://hwhelp.s3.amazonaws.com/hwhdocs/The%20Math%20Behind%2... [PDF]

Pythagoras: why we throw giant rocks at walls.

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