"The ability to spot venomous snakes may have played a major role in the evolution of monkeys, apes and humans"
Yes. And one day monkees may fly right out of my butt.
This is just another idea by a scientist and we will never have enough facts to either dispute it or back it up since these were one-time events in the distant past. Can't these guys find something more productive to do with their time?
Oh, wait. Let me save you guys the trouble. Okay, I don't know anything about the scientific method, I am disparaging these scientists that are doing noble and valuable work, all science proceeds from ideas such as these, blah, blah, blah.