Remember when we could sit next to people on a plane?  Imagine sitting next to a guy who said he was a Havard trained doc, who has pictures of himself learning to read on Carl Sagan's lap, who wrote a book on overcoming his own opioid addiction and who happens to think cannabis is a great medicine for treating many conditions.  Wouldn't that be the best plane conversation ever?  Well, buckle in, put up your tray table and return your seat to the upright and locked position.  We are about the take off with Dr. Peter Grinspoon.