“Why’d I Take Speed for 20 Years?” … asks former Reply All host PJ Vogt, in his new podcast Search Engine. “Dexedrine was like glasses, [the doctor said], but for my brain.” The episode looks at the history and rise of medical amphetamines, and I found it riveting. (Full disclosure: PJ is a friend of mine.) The podcast also has a newsletter, which I read more than I listen to the show. I’m not really a podcast person, although I also especially liked an earlier episode speculating about “what’s going on with Elon Musk?”