Ok, rabid point-makers, let's stick to the chemicals about which this thread was made: Drugs to "enhance" one's life.
If you read Dan's article, you will see that his point is that this drug can apparently be used, not to cure a disease, but to make a normal person somehow "better" than baseline.
My point is that you cannot change the chemistry in your body without affecting other systems. Your body is a closed refinery. When you turn a dial here, another one goes off-kilter. When you add a few drams of X, then Y is out of balance.
So choosing to enhance your chemistry to affect your alertness or smartness, however that is quantifiable

, will affect other things. Which is where my bank account comes in....
Jennifer