"Pulse diagnosis" is a part of traditional Chinese medicine. However, modern medicine has shown little evidence for its usefulness. The only things that can be determined by checking the pulse are the heart rate (accurately, for the most part) and blood pressure (which can be gauged very roughly). The pulse can be fast or slow, and it can be full and "bounding" or weak and "thready." Unfortunately, a given pulse abnormality may be caused by any number of different conditions, so pulse reading by itself is of little use in making a medical diagnosis.

http://physicalexamination.org/?q=node/33

doctors check pulse along with heart beat temperature, blood pressure etc. to know the health of a person. I don't know anything about just checking the pulse to judge a person.

The pulse rate is one of several indicators of state of health. The pulse rate alone is not an index of the state of health of a person, but that with other findings on examination and investigation could provide answers

There are many methods of trying to "read" someone, books written on the subject, its practically a science in itself, used by the Judicial Court system, in picking out juries, based on the personal traits they are looking for.

Though it is possible to read someone by studying past examples, their faces, which muscles they are moving volunteerily, as well as those that move without our control, whether you shine your shoes, or have dirt under your nails, its all a science, they can never be 100% sure, because one thing they fail to consider, is regardless of how they read you, or me, we each have a choice outside of how they judge us!

I could look like a punk rocker, but just what if I like Opra music?
I could have long hear, but just what if I like oldies music?
I could look straight, but just what if I was into gorillas instead?

Its just another method this government uses to be racist, in getting what it wants, and ignoring what we want!

I hope this is useful!