Donald Trump frequently tells crowds that he went to Wharton, as a credential to prove that he is intelligent: "I went to the Wharton School of Business," he noted several times. "I'm, like, a really smart person." "Why do you have to tell us all the time that you went to Wharton?†moderator Chuck Todd asked. "People know you're successful." "They know it's a great business school," Trump replied. You might be forgiven for thinking from this, as I did, that Trump has an MBA from the Wharton School of Business. He doesn't. He actually has an undergraduate degree for...