> So the first time(s) you use cocaine, you get a high that's incredible. The second time, this effect is about 100 times stronger than usual, so 10 times less strong than the first time.

> Then you want to go back to that first unbelievable fantastic time, and take more. You may get at 200, but the more often you take it, the less the effect, and the stronger the craving for it. This is more or less how (this) addiction works.

Isn't this a common sense regarding drugs in general? I mean, this sentiment is repeated constantly through the fictional depiction of drugs and through the media.