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More specifically, what is the oldest evidence of human awareness of what we now call the Pythagorean Theorem?

The phrase, "evidence of human awareness" was used to exclude a different question of when was the first proof made. It also constrains answers to those based on artifacts. (Artifacts form the basis of our knowledge of ancient history.) Each artifact can have different interpretations. The dates of the artifacts have errors/uncertainties. So, the question boils down to, of all the artifacts ever in existence, which probably has the earliest date that also is good evidence of a human being aware of the Pythagorean Theorem?

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    $\begingroup$ There are two possible questions here, and they have different answers: (1) When was the Pythagorean theorem proved? and (2) when was the Pythagorean theorem known and assumed to probably be true without proof? $\endgroup$ – Endy Jun 15 '18 at 20:54
  • $\begingroup$ I disagree due to your usage of "here". IMO, my actual question above is just #2, not #1. That said, I'd guess a proof was discovered near the same time. $\endgroup$ – Jason Arthur Taylor Jun 15 '18 at 21:43
  • $\begingroup$ Please refer to the rules, how to ask questions on this site. $\endgroup$ – Alexandre Eremenko Jun 16 '18 at 1:28
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    $\begingroup$ Babylonians developed the theorem "at least fifteen hundred years before Pythagoras was born." en.wikipedia.org/wiki/Pythagorean_theorem#History $\endgroup$ – Wilhelm Jun 16 '18 at 19:14
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    $\begingroup$ Prof. Eremenko, you imply but do not state that I've violated "the rule"(s) of this site, yet you fail to give enough specificity for your comment to have substantive utility. Concurrent to your comment, the question was downvoted. Don't be so passive aggressive; prey tell, what rules, exactly, do you think I've violated? $\endgroup$ – Jason Arthur Taylor Jun 24 '18 at 23:10