I have a heck of a time with that one - mainly because 'intelligence' is so hard to define. My ability to perform 'intelligent' tasks has shot up with the advent of the computer. I can now run calculations at lightning speed, recall all my appointments and phone numbers, and speed-read documents for relavent materials. However, my 'understanding' of calculus and finance is really due to study and learning and intuition. Can these abilities be augmented through manipulation? Maybe. I sure hope so. If we find drugs/genes/machines that can make these parts of our brains better, the world is going to get much better..