“Roughly 2 million years ago” Gotta always love how these start of.. Millions of years ago.. billions of years ago.. Like anyone or anything was there to witness exactly how or what was happening and had collected exact data in its exact nature of that time.. Come on, over so many supposed millions of years so many things would be changing. Look at how much changes just with in one of our single lifetimes, now compare that to millions of years..
I dont even bother listening to any of it , because truth is no one knows 100 % for sure what was going on. I just wish they would say , We think or we can speculate.. not act like they know exactly what happened.
Not to mention the never ending paradox of how did anything come into existence to begin with ? There has always been existence of intelligence, else how could anything be here today. If there ever was a time when there nothing, absolutely nothing, then nothing would exist today. Nothing can just come into existence.