I think Twitter has a way of studying an identity in isolation, apart from the person. In other apps, you usually see someone’s life unfold, following them in their many different aspects. But Twitter, for one reason or another, seems to have an invisible hand that guides everyone’s account and profile to be about exactly one thing, whether it’s coding or startups or something else. I think this happens because, when you start talking about something and it “sticks” with people, Twi...