A couple follow up questions:

1.) I'm assuming spoken language first grew because of its utility in communicating danger, the presence of prey or predators, etc. Is that correct?

2.) And if so, did written languages follow this pattern? Or was it used early on primarily as a vehicle for mythology or worship?

3.) Or did spoken/written languages and their development grow together?

As far as my primary question goes, I'm not holding my breath for an actual, "Well the earliest records we have are 10 instructionals on gutting a pig and 25 stories about the Volcano Gods." I'm mostly curious about why we have languages when we could have survived (survived, not advanced) without it. Edit: Minus the fact that we have brains that allow it. If you can ignore an enormous fact like that.

Would I be better of asking this in an anthropology sub?