You know how I know race is real? It's not because of the color of anyone's skin. It's because my wife and I play the game "guess the race" where you have to guess the race of a criminal based on the article's headline. I'm wrong about 1% of the time. Regardless of where a person is in the world, their behavior is shockingly similar. Scientifically, you know a theory is correct on your ability to make accurate predictions. Race is a scientific fact.