[ExI] Strange mystery explained

[Stephen Van Sickle]

On Mon, Jun 4, 2018 at 1:12 PM, Keith Henson <hkeithhenson at gmail.com> wrote:

It seems
> this process started when the Neolithic agricultural revolution began
> and ended when violence between patrilineal clans was suppressed by
> Chieftains or a State.
>

Could it also have ended with the invention of widespread slavery?
Prisoners then become a valuable commodity rather than a dangerous
liability.

s
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