Hall- the physical characteristics of colour, hair, and bone signify race in the everyday world. This is a visible difference. What fixes the difference is the genetic code. These things you can see are signifiers of things you cannot see, e.g. intelligence, morality, sexuality. You can read the body as a text, we inspect this text, the body. We are readers of race. We are readers of social difference. We invoke the body as if it were a transcendental signifier