Marijuana and Divergent Thinking

In response to my post on the effects of mood on cognition, which also referenced the possibilities of self-medicating ourselves into the ideal mood, Andrew Sullivan offered up the following anecdote:

I was talking with a fine artist the other day and he was telling me how blocked he was on a piece, and how he then smoked some pot and everything came together.

It unleashed what he wanted to express, by suppressing the analytic portion of his mind that was inhibiting him. I know this is the...