In today's episode, I spoke with Keith Humphreys (https://profiles.stanford.edu/keith-humphreys), a professor and addiction expert at Stanford University. We discussed the opioid crisis, what sane marijuana policy would look like, and why we are both skeptical about gung-ho revolutionary types. Keith also told me about the time he went to Iraq to help rebuild that country's psychiatric infrastructure, which is ten trillion times cooler and more impressive than anything I have ever done or ever will do. (Music: Intro: Why? - “The Vowels, Pt. 2” (https://www.youtube.com/watch?v=ggqe_uHvrlw); break: Afroman - "Because I Got High" (https://www.youtube.com/watch?v=WeYsTmIzjkw); outro: Against Me! - "Thrash Unreal" (https://open.spotify.com/track/3c3XnCPwxGhQEHFxxjQcWe))