People shouldn't be judged by the color of their skin, right? For most of us, that's Martin Luther King 101. So maybe the solution to racism is to forget race exists. Forget color. But this video might make you think differently. Investment executive Mellody Hobson starts off by talking about an embarrassing moment. She suggests a really compelling thought experiment at 4:16, and at 9:04, she tells us why diversity's good for business.