λ the β-Redex Reducer
β-Redex Reducing Member
To illustrate why the concept of races has physical meaning, just think for example about what you learn about someone when you learn that he is caucasian. You immediately learn information which narrows down physical information such as his hair, his skull shape, his skin, etc. These are real physical properties, they are not social constructs. That makes the concept of race physically meaningful, even if it gets arbitrary and messy in the many corner cases.
Another example, just look at dogs and cats. We talk about their races all the time, because it is just easier to describe them that way.
I am not saying that race is some rigorous system, it is just an easy and quick way to communicate information. There happens to be enormous groups of people who all share the same sets of special characteristics and instead of having to list all those characteristics one by one it is easier to just classify the most common of those groups into a single category and then use a single word to refer to all those characteristics at once.
Another example, just look at dogs and cats. We talk about their races all the time, because it is just easier to describe them that way.
I am not saying that race is some rigorous system, it is just an easy and quick way to communicate information. There happens to be enormous groups of people who all share the same sets of special characteristics and instead of having to list all those characteristics one by one it is easier to just classify the most common of those groups into a single category and then use a single word to refer to all those characteristics at once.