That doesn't answer my question at all. If I only took an interest in what other people were talking about I'd be pretty poorly informed; I don't see how you can learn effectively without being motivated by internal curiosity.

The relative absence of psychedelic addicts in itself would be grounds for wondering how they got to be tightly controlled substances in the first place. I'm not suggesting that he should be expert, but that he should at least have a base level of familiarity with the field.

I'm not fluent in fortran or COBOL, but at least I know what they are, and I'm also familiar with lots of languages that I'll probably never have occasion to use, like APL, brainfuck and so on.