Palaeoeconomics

Palaeoeconomics credits "Mrs. Adam Smith" for the rise of Homo sapiens and the fall of the Neanderthal:

As Adam Smith noted, division of labour leads to greater productivity because it allows people to specialise and become very good at what they do. In the vast majority of cases among historically known and present-day foragers, men specialise in hunting big game, while women hunt smaller animals and collect plant food. In colder climes, where long winters make plant-gathering difficult or impossible for much of the year, women often specialise in making clothing and shelters.

The archaeological record, however, shows few signs of any specialisation among the Neanderthals from their appearance about 250,000 years ago to their disappearance 30,000 years ago. Instead, they did one thing almost to the exclusion of all else: they hunted big game. There are plenty of collections of bones from animals such as reindeer, horses, bison and mammoths that are associated with Neanderthals, but few remains of rabbits or tortoises. There is also little sign of preserved seeds and nuts, or of the specialised grinding stones that would have been needed to process them. And there are no bone awls or needles that would suggest that Neanderthals were skilled leather workers, despite the abundance of animal skins that their hunting would have provided.

Signs of division of labour come only with the arrival of modern humans into Europe around 40,000 years ago. That is when evidence appears of small animals being eaten routinely and plant foods being gathered. It is also when tools designed for sophisticated leather working emerge.

Dr Kuhn and Dr Stiner suggest that division of labour actually originated in a warmer part of the world — Africa seems most likely — where plant foods could be gathered profitably all year round. But as humans brought the idea of division of labour north, the female side of the bargain gave the species a significant advantage by providing fallback foods when big game was scarce and allowing more people to inhabit a given piece of land in times of plenty. Modern human populations grew, Neanderthal populations shrank, and the rest is prehistory.