A 19-year-old drops out of college. Parents are furious. He says he has an idea. What's the one question that decides if he's a genius or an idiot?
There is no question that separates genius from idiocy—that's the trap I fell into, the one that cost investors $700 million and me eleven years in prison.
I dropped out of Stanford at 19, convinced I would revolutionize blood testing. My parents were furious. I had conviction. I had a vision. I wore black turtlenecks because that's what revolutionaries wore. I lowered my voice an octave becau...