Thanks for the links, Claude. That Playboy panel discussion looks interesting, though I have to say that on first blush, its hard to imagine a 100% commitment to absolute truth in that kind of public forum. But I haven't read it yet, so that's just an instinctual thing.
Its certainly interesting that in the first few moments, Duke states that he doesn't think that drug addiction is an occupational hazard for the musician. Hard to agree with that when you consider how many people thought it was the junk that made Bird play like he did.