My pet theory is that our advances in brain capacity improved our ability to obtain, plan, prepare and preserve food, paving the way to further brain development. It's a positive feedback loop.
So purposeful fermentation might have played a role, just like fire, and hunting, and gathering techniques, and farming. It probably wasn't a revolutionary and sudden change, but gradual developments.
So purposeful fermentation might have played a role, just like fire, and hunting, and gathering techniques, and farming. It probably wasn't a revolutionary and sudden change, but gradual developments.