One thing I found very interesting from the book (which is worth a read): The notion humans might have rose to supremacy among the apes, not by brainpower alo

One thing I found very interesting from the book (which is worth a read): The notion humans might have rose to supremacy among the apes, not by brainpower alone, but by a combination of brainpower and mirroring, i.e. our almost magical ability/tendency to copy others. This then, goes the hypothesis, allowed a thicker channel of intellectual transmission, and faster development of species technology, even though Neanderthals had 20% larger brain mass and appear to have made many of the hallmark human discoveries first.