Apparently, an undocumented side effect of dope is a gross overestimation of one's own intelligence. Dopers become convinced they've hidden their stash so well a cop won't find it. They're always wrong.
Success in investing doesn’t correlate with I.Q. Once you are above the level of 25; once you have ordinary intelligence, what you need is the temperament to control the urges that get other people into trouble in investing.