Chimpanzees are not prototype humans, they are a different branch of the tree, they split off millions of years ago, they eat more than insect and bugs they eat monkeys, and each other or some of them do.
Nothing magical about each and everyone of us, just random chance, some one has to win the loto, and nearly every week some one does. Humankind have had longer and played more times that is all The human brains is getting smaller, are we de-evolving?
Neanderthal has a bigger brain than us, and was fitter stronger taller more able, more prolific. we managed to wipe him out. :AR15firin
Shellsuit man is breeding faster than we are, we'll be over run and consigned to a footnote of history with in a few generations.
If it was as simple as we think, we'd be too simple to think.