This is Platformer, a newsletter on the intersection of Silicon Valley and democracy from Casey Newton and Zoë Schiffer. Sign up here. Over the weekend, a highly anticipated book arrived in the mail. Elon Musk, Walter Isaacson’s first biography of a tech titan since his comprehensive take on Steve Jobs, followed from two years of Isaacson shadowing Musk in his travels around the world. Given Musk’s general antipathy toward the press, the book promised to offer the sort of fly-on-the-wall accounts of Musk’s recent life like no other. Over more than 600 pages, Isaacson details the improbable arc of Musk’s...