A Growing Understanding?

This article about modern humans and the last ice age is well done and approaches what I personally think is a thesis that might explain how human behavior changed around 70,000 years ago and we became “fully modern”, whatever that means. My concept is that during the last ice age different hominins mingled and interbred somewhere, and something happened in the brain wiring of their offspring that created we modern humans, ie changed the anatomically “modern” human to a group that was very flexible and capable of surviving. I believe it was both language and the ability to tell stories, and thus carry culture. This article, though, misses a key point, which is that there have been many ice ages, all through the two million development of the human line. The climate has changed and changed again, always, and greatly. I believe throughout that time humans were kept small, isolated, and barely hung on, not even the apex predator. Something happened 70,000 years ago, maybe after the Toba eruptipon. https://www.discovermagazine.com/plan...