I wouldn’t take anything in that provigil article very seriously. It was written by a pot-stirring columnist for an English tabloid, first of all, and his account doesn’t agree with other reports. Most likely, he was simply sleep-deprived and could have gotten similar effects, without the side effects, from simply getting a good night’s sleep. Provigil’s really more for people who need to remain alert for long stretches of time, but not necessarily remain able to function at a high level. For example, troops on an overnight march could benefit, but it wouldn’t help a stock broker or scientist, because those people need a high level of intelligence, not simply alertness. Provigil hasn’t been shown to increase memory, either.
If you’d like to know more about the idea of nootropics(including drugs, supplements and other nutrients), I recommend Smart Drugs and Nutrients.