Re:Sorry, but this is a crock of shit (Score 1)

youre right, but that is not the reason why. its because, instead of topping off at 20-28(which is generally the mental peak- look at the ages of most mathematicians, scientists, and chess players during their most productive period)the intelligence blooms earlier, AND reaches its max earlier. 17-9 = 28-20, just shifted a little on the age axis.