The fact that I am writing this from home, in a New York City that has been more or less shut down, with the National Guard checked into neighboring hotels and, just a few blocks away, Gotham’s principal conference center hosting an emergency hospital, is a reminder that to dismiss almost anything these days as an impossibility is unwise. And so, yes, it is possible that Andrew Cuomo could be chosen as the Democratic nominee at whatever sort of convention the party is able to hold in Milwaukee in August. But it is also extremely unlikely.