When I was a high school teacher, I used to take odd jobs to supplement my income. My favorite one was working for a small business in Washington, DC, run by my friend Hector. You know those people who pretend to be statues? They paint themselves to look like they're made of steel or marble and remain motionless. It turns out there's a market for that, and people routinely hire Hector for parties. He'd stand in the corner...