Ray Kurzweil says that in 20 years we will understand how the human brain works and Artificial Intelligence may be able to recreate the brain map and move forward with it in a way we can not comprehend today. With exponential growth, nanotechnology will be millions of times more powerful than today and by 2045 man and machine will be one in an endless process known as singularity. Look into this guy. If he’s right and by using basic mathematics on exponential growth, he will be, its a good thing to get a heads up on these things.