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[stopdiggin]

5. a further reason(ing) for abandoning

the technology (provided in the paper) is that there was very little 'functional' advantage involved in the copper tools (with some few exceptions) over easily made stone and bone replacements. i.e. - in practical terms, a stone arrowhead (axe or knife) got the job done equally well.

Still -- really interesting that this technology would be almost entirely abandoned. That's unusual. Kind of wondering if we aren't looking at displaced (or replaced) populations?