Karl wrote:

> Assume higher physical strength in hunter-gatherers.  Then, assume
> even higher physical strength in Homo Sapeins Neanderthalis.

No need to assume: it's attested by bone development and tendon
attachments.

> it's a bit of an assumption to make but I'm sure there's
> some way to get them open without a vice.

Chimps have invented stone hand hammers.  Plentiful stone hammers in
human contexts much older than and including Neanderthal.

-K L Feder _The_Past_in_Perspective_ Mayfield 1996

Dick
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