A very dark-complected black man dressed entirely in black is getting ready to cross the street. There is a power outage, all of the streetlights in town are out, and there is no moon overhead. A black-painted Prius with no headlights drives silently straight toward him at 45 mph (that's 72 km/h for everyone else on planet Earth), but turns at the last moment and doesn't hit him. How did the driver know to swerve?
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