It's a familiar story to many of us: In prehistoric times, men were hunters and women were gatherers. Women were not physically capable of hunting because their anatomy was different from men. And because men were hunters, they drove human evolution.
Survival isn’t social norm, it’s ultimatively pragmatic: you du what works. And if Ugharia is a better hunter than Ugh, that means, Ugh is a stay-at-cave dad, cooks the mammoth, cleans the stones and brings little Ughie in the kindergarten.