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, 2018 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. $\endgroup$ Jun 15, 2018 at 21:43
  • $\begingroup$ Please refer to the rules, how to ask questions on this site. $\endgroup$ Jun 16, 2018 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 $\endgroup$
    – Franz Kurz
    Jun 16, 2018 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? $\endgroup$ Jun 24, 2018 at 23:10