Summary and Reaction to Diamond

   In this text, Diamond states there are three causes that effect on variety of human or animal. The three causes are natural selection, sexual selection, and the last one has no function at all. Diamond lists several way to classify human into some groups, race. Many types of classification Diamond lists indicate that there is no absolute way of grouping human into race.

     By reading this text, I realized how uncertain the race is. If people in old-time have focused on different aspect of human character, current classification of race may be different. If so, “black” may not be called “black”, and may not be discriminated. I thought it’s nonsense to classify people into race. This was a good opportunity to reconsider critically about the existence of race.