Sam Harris is the kind of guest Joe Rogan loves to have on his podcast: he dresses awkwardly in a sport coat with jeans; he undertook a PhD in neuroscience after a transformative experience with MDMA; his tone is accessible yet patronising; he has a sense of academic authority which belies a set of controversial views that include calling Islam “uniquely uncivil” and almost unfettered support for Israeli attacks on Gaza; he made an app called Waking Up, which promises to be “a new operating system for your mind”. Rogan has hosted Harris on his podcast many times and the...