After reading Shreeve

Summary(main idea)
Shreeve says the word 'race' are used by two ways; one is science. Another is other category like police or medical research. However, he states that 'race' should not be used as scientific meaning. It is difficult and impossible  for human to define the word 'race'.  Moreover it is also impossible to divide people into geographic regions such as Asians or Americans, because they are connected each other. Therefore we cannot define people as geographic way like 'the bushel-basket'. It is just traditional view to decide by appearances like skin color and so on.

Reaction
I can understand almost what Shreeve want to say, but there are no his opinion or specific conclusion. We all human are the same. We should not be divided. But 'race' is related with geography? So, my race is Asian, Japanese. That's all ?!