People are special. Person perception is quite different from rock perception, for example. Geologists, those with a rock in their shoe, and pet rock owners aside, the perception of a rock is often merely the perception of a collection of lines and surfaces. Yet people are not simply collections of lines and surfaces.
How do you make sense of Barack Obama and John McCain? The odds are that you judge them mainly on two dimensions: warm/cold and (in)competence. Depending on your experience of them, you may judge one of them as both warm and competent, evoking your admiration and pride; and perhaps the other as neither warm nor competent, which triggers a sense of contempt and disgust.
