 every time you're having to do, let's say, fractional multiplication, that is insane because they cannot do that for the rest of their lives. And when I interviewed a math professor at a California college, he says that the kids who are coming into his college have no algebra skills. So they can't even do algebra. So, of course, they can't do higher math like calculus. And the end product is that the Silicon Valley companies in Northern California don't want those graduates because they can't perform.