Manhattan real estate is not necessarily logical, and hardly a precise science. But for the most part, basic logic does apply, here. That is, it's easy to see why apartment listings in a certain Manhattan neighborhood are appealing to people looking for Manhattan rental apartments. A subway ride and a brief pub crawl is enough to explain why, say, people want to live in rental apartments in the East Village; a stroll through Central Park and a shopping jaunt at Fairway or Zabar's is enough to figure out what NYC dwellers see in Upper West Side rental listings. But while the appeal of Upper East Side rental listings is plain enough -- Central Park, museums, shopping, you already know all this -- it's about to get a little bit clearer. We're not saying that anyone would move to the Upper East Side because the UES just got its first branch of Danny Meyer's beloved burger joint Shake Shack. We wouldn't say that. But... have you ever been to Shake Shack? It's not impossible, and it's surely not unreasonable.