Share 'Fruit and Human Evolution'

I'm writing a paper for school and I'm trying to build a case for a fruit-based diet being our natural fare.  I'm well aware of the strong arguments supporting this case, but I'd like to approach it from an evolutionary standpoint if I can.  Please don't reply with the other supporting arguments - thanks.   Specifically, I would like to address these two issues (if possible):   At what point in h…