From what I’ve observed of this personally, I doubt that cannabis is some great doorway to insight and creativity. For myself, for example, when I indulge in the weed I become unable to focus or remember anything from short term memory. On the other hand, my favorite network designer couldn’t turn his ideas into ConceptDraw/Visio diagrams without a toot or two, but when he did the results were almost like poetry. Something in the THC just freed up his visual skills to great effect. I can see how that same setup could be helpful in other areas.