Ban-jani said:
interesting theory, though I'm not sure why lions and tigers have not auditioned for Cats since they consume more protein per body weight than us. besides, when we decided to jump down that tree, we aren't really as adept hunters as bears, big cats or big apes.
following your theory, I thought of this. we eventually devised tools to compensate for our lack of speed, predatory instinct and nocturnal prowess, several traits of a protein high animal. in the animal kingdom, we were and still is quite weak when bare handed.
with the evidence that we devised hunting tools, it meant that intelligence came before a high protein diet, not because of a high protein diet. before tools, I hazard a guess that we were scavengers and foragers. intelligence gave us the upper hand.
and another point of your theory is that we were previously tree dwellers. there is indeed an accepted theory of evolution that links man with apes, like chimpanzees. but as I mentioned earlier, there is a big evolution gap, a void of fossilized evidence that link us and our primate - homonid ancestors safe for genetic similarities and to certain extent, physical appearance. it is what transpired in this evolution gap that is of most interest to the topic.
we can't rule out your theory as that might just be exactly what happened in this evolution gap. but what actually transpired during this unknown period is still very much open for debate.
i am interested in the origin of your theory though. reading into it might be enlightening.