When Elon Musk posted a video of himself arriving at Twitter HQ carrying a white sink along with the message “let that sink in!” it marked the end of a dramatic takeover. Musk had gone from Twitter critic to “Chief Twit” in the space of just a few months but his arrival didn’t put an end to questions about his motives. Musk had earned a reputation as a business maverick. From PayPal to Tesla to SpaceX, his name was synonymous with big, earth-shattering ideas. So, what did he want with a social media platform? And was this all really in the nam...