That's pretty inaccurate. Literally everyone makes snap decisions based on the physical evidence presented to them. For example, when we are driving and we see red octagons on the side of the road, we will invariably assume those are stop signs, regardless of the words written on them. Likewise, if a person shows up to a multi-million dollar business meeting in jean cut-offs and a sleeveless shirt, EVERYONE else at the table will have certain automatic responses to the visual data. The human mind has been trained to work like this since we came down from the trees and had to start dealing with predators.
Of course, people can and will correct their initial snap judgments, but A) not all the time, and B) even after correction, those snap judgments tend to color future behavior.
Again guys, if you're materialistic, deal with it yourself, don't project on the whole world. There is no human mind or everyone at work here.