"Ladies and gentlemen, boys and girls, dudes and dudettes," I announced that night as I was about to close my first show. "For the first time in public, I—Jason the Magnificent—will attempt to complete my three-ball ballet with a full seven-hundred-twenty-degree spin while all three balls are in the air. That's two full turns for you non-math majors. If I succeed, I hope you will throw a few bucks in my derby. And if I fail…," I said with mock earnestness, "tell my wife I loved her."