this post was submitted on 03 May 2024
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It could be inherited from a common ancestor.
Or it could just have likely evolved multiple times in different primate branches.
As we have absolutely no way to document how early it first happened in our own branch. To assume it is linked is just more attempts to try and indicate the human branch is special. Use of tools has been seen in many many branches. We don't assume that came from a joint ancestor that crawled out of the water. Or before.