In what has to be the most somber VBW to date, David and Tamler welcome Harvard psychologist Matthew Nock to the podcast to talk about suicide and other forms of self-harm. Matt tells us what we know – and what we don’t know - about the causes of suicide and the ways to prevent it. In the first segment we talk about the recent exposé of Zimbardo’s Stanford Prison Experiment. Were the guards told to be brutal? Were the prisoners never aware that could have left the study at any time? What is Tamler going to do about the Zimbardo interview in A Very Bad Wizard the book? Is David going to continue teaching it in his intro psych course? And does Yoel Inbar need to preregister his beers?