The mathematical version of "E-I-E-I-O" is pure genius. Those numbers aren't random—they're the mathematical constant e raised to π i , which equals -1. So the square root of -1 gives us i . The final expression, 2(4+7)-22, equals 0. So we've got e , i , e , i , 0... get it? That's what happens when mathematicians have too much time between grant applications.