Blink explores how humans make snap judgments (and how often we can be wrong). In What the Dog Saw, he questions "false certainties" — things we think we know.
What does hair have to do with it? In a recent interview with CNN, the biracial writer explains that when he grew his out and "began to look more like people's stereotype of a black male," he experienced "a striking transformation in the way the world viewed [him]," including getting stopped by police and when he went through customs at the airport.
"Even though I was exactly the same person, once I had longer hair, the world saw me as being profoundly different," he said.
Read more at CNN.com.
In other news: Black-on-Black Political Attacks.