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Evidence that human ancestors developed tools before opposable thumbs, and the opposable thumb was an evolutionary adjustment to the use of tools.
https://www.sciencealert.com/the-earliest-humans-to-make-tools-may-not-have-had-fully-opposable-thumbs
At least we dont poop squares!!
@taiwan_girl
Who’s we?
I poop various geometrical shapes, though squares lack that important third dimension.
@jon-nyc @Horace 555
