I understand the driving need to prove to people that you are right, which is why I am to some degree sympathetic to Elon Musk’s ill-advised plan to rename Twitter and turn it into his long-dreamed-of financial heavyweight. He wasn’t right when he tried to rename PayPal in 2000 and create an internet upstart in banking; he’s not right now, either. But that isn’t going to stop him from trying to Show Us. Musk says he wants to rename Twitter X, and the Twitter logo has already changed on the app to a Unicode X. There’s some history here with...