Betsy Mason interviewed David Eagleman, author of Incognito: The Secret Lives of the Brain. Eagleman uses Mel Gibson as an example:
Everybody was arguing about whether he is an anti-semite or not an anti-semite. What I say in the book is, even though his behavior was despicable, are we obliged to think somebody is or is not something? Isn’t it possible for somebody to have both racist and non-racist parts of their brain that can be coexisting in a single person — where he might say things at one point and feel bad about it at another point? To say that somebody has true colors — that there’s sort of one thing this person is — isn’t nuanced enough with our understanding of modern neuroscience. People are complex in this way. They contain multitudes.
The Dish 