For a lot of personal experiences I've known of, including mine, it seems that somehow cannabis improves thinking "outside the box" or something. I certainly think differently while high, like my neurons do things in ways like never before. Thinking about this makes me think of The "Stoned Ape" theory of human evolution by Terence McKenna! It has to do with the possible role of a diet of psychedelic substances carried by our ancestors with evolution READ IT IS AWESOME