Calculus, Logic, Music and the Human Brain

[Justtristo]

The short answer is that these unique abilities developed as our brains evolved, obviously.

So you are saying that selective pressures weeded out the humans who did not possess enough cognitive capacity thus preserving those that did? So exactly when did we develop the ability to think logically and to conduct advanced mathematics? Would this have been around the time of the great philosophers in Greece around 4,500 years ago? Calculus first appeared in the 17th century, is this when humans developed the cognitive ability to do it?

Those great philosophers in Greece existed 2500 years ago or so, not 4500 years ago.