Re:
https://www.dailymail.co.uk/sciencetech ... likes.html
"'Humans are just outlandishly social animals, and that goes back to these deep forces that selected for maximising information,
information that would have been useful for living in a hunter-gatherer society 30,000 years ago and earlier."
"Anthropologists have long-known that modern hunter-gatherers trade ostrich eggshell beads to cement their interpersonal relationships —
with such being practised among living Bushman groups in the Kalahari Desert."

Who knew

Ostrich eggshell beads were the original calling card for friendly trade ...
sharp spears, probably, for the unfriendly commerce.
Rod
