History
All 17 groups were used by Egyptian craftsmen, and used extensively in the Muslim world. A proof that there were only 17 possible patterns was first carried out by Evgraf Fedorov in 1891 and then derived independently by George Pólya in 1924.
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“... all big changes in human history have been arrived at slowly and through many compromises.”
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Is not redeemed from time, for history is a pattern
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“It’s nice to be a part of history but people should get it right. I may not be perfect, but I’m bloody close.”
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