sharon j, on 2014-February-23, 09:00, said:
what about the concept of trade or commerce?
This is actually an interesting idea. Go back further and consider. Trading with or having interactions with other tribes or groups which did NOT involve clubbing each other on the head would indeed have had an impact. What a concept.
Many species drive the male young away so as to prevent too much inbreeding in the group but that seems to be a fairly haphazard situation. Formalizing such arrangments in ways other than raids would presumably lead to cooperative efforts between groups in other areas as well. Such arrangements lasted down well into "modern" times and indeed may exist yet in places which still practice arranged marriages.
Trade in other areas as well would seem to suggest a beginning of some sort of economic model, though I am out of my depth in those waters. It would also seem to suggest an interest in other than the here and now which is where most other creatures appear to live, and could have given rise to what eventually developed into science through the introduction of things outside the group's experience.
Even back then, there were probably people who wanted to investigate further and others who screamed the equivilent of "witchcraft, bop (him, her, it) on the head or it will cause the end of the world as we know it!"
I think Sharon has a very good point. Again it sits somewhere on a continuum, but then most things do, it seems.