Racism is the issue and diversity is the experiment in this episode. Jonathan's racist cousin Scottie is visiting. He had an accident with a chemistry set and is blindfolded. Knowing that Scottie is racist, Jonathan's dad concocts an experiment that tests to see if Scottie can change his heart. After having so much in common and becoming friends with Davey, the blindfold comes off and Scottie's prejuidice dominates him. Angry because Davey is white, he storms out of the doctor's office. Meanwhile, Goliath has been a little prejuidice as well. He does not like another dog because the dog is different. The difference is that the dog has spots. Eventually, both Scottie and Goliath realize that true colorblindness is when you look at the heart instead of looking, and judging falsely about someone just because their skin color is a little different.