I’m a math guy. Calculus, all that stuff. My favorite subject in college [N.C. State] was statistics. Some people would be like, Gosh, I hate this stuff, but I used to get fired up trying to figure out a problem. I get my math from my mother [Joan]. She was a competitive swimmer and a math teacher. Me and her, we had a blast doing calculus stuff.
For the whole article, including a great picture of Rivers doing calculations on a clear board, check out First Person from January 9, 2007.