In some scenarios we tend to judge people by the school they attend or their particular profession. For example you may see a prostitute offering you her service who may seem like she enjoys selling her body. Well the true matter of the fact is that her first sexual encounter was when she was abused as a young girl and she perpetuates the vicious cycle through frivolous sexual contact. As a result of her previous sexual abuse her self esteem is low and she continues to allow herself to be abused because it is the only way she knows how to deal with this traumatic experience. In another very different but less devastating scenario there may be somebody who attends Harvard and appears to be very intelligent. The real story is that he is a "C" student in high school with mediocre SATS who's father and grandfather went to the same school. Since he was a legacy, the admissions committed gave him a conditional acceptance.
As you can see, looks can be quite deceiving whether its at a superficial level like what somebody's profession is or at a profound level like why a woman chooses to sell her body. Life is very ironic like that I guess. Sometimes we as humans classify and generalize way beyond what is ordained, we never know who somebody really is nor what they have been through, so let us read a couple of pages before we judge a book by its cover.