Doing classification is human’s instinct. Finding the similarities and differences between object, putting them into different categories, and dividing them makes human feel comfortable since it help us to find things more easily. The author also defined people as “African American” and “Jewish People”. I do not think this kind of behavior is incorrect, but different people should not be treated in different way. Separate people by their race does not bring any convenience and benefits. The conflict and run-in of different cultures is what makes the world attractive and unpredictable.