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The original was posted on /r/askhistorians by /u/Cauhtomec on 2023-10-18 02:26:53+00:00.

I have heard this theory on and off since I was a kid. Trying to find out an answer to this seems impossible as when it is searched I get a million different (seemingly contradicting) studies, results, and theories. Is this because there is a deadlock and there is no consensus yet?