Albino and black hooded rats raised in segregated communities don’t like and won’t help each other when they first meet. But after two weeks of “positive social interaction,” they become best buds. On the other hand, deer mouse sperm, inside the womb of a promiscuous dam, can discriminate against sperm from a different mouse’ testicles. “Racism” can be seen pre-conceptually and can be “cured” by nothing more than a good time. It’s reason for optimism!