Dear famous person, If we want to be seen with you, we'll turn our backs on you. Please don't be offended. It's just that your fame isn't enough for us anymore. We need to attach ourselves to your fame, so that we can post the resulting picture to Twitter, Facebook and Snapchat. That way, we achieve our own sort of mini-fame. Which could be the maximal fame we ever attain. Please forgive me for this missive to the stars. There's a reason: this astounding picture posted on Sunday to Twitter by Hillary For America design lead Victor Ng. He credited...