 The Koran expressly forbids it, and you have to avoid it, period. And so they can do things where you get gain, or something goes up in value, if you're in the Muslim tradition, and you're following the Koran to the letter, but you cannot open a high-yield savings account at the bank. Nope, not a chance. Can't do it. And so it's interesting to study these things, and there's no different...