Generally speaking, judging people by their appearance is not the best idea in every situation. There are many cases in which recognizing anyone by the way he looks and trying to put his name next to the job he is involved in without knowing anything previously doesn"t work. In our school we even talked about how to recognize certain persons by the way they smell. There are particular groups of people that are easily recognizable by smell. For example plumbers or something like that. But could you say how android developer uk smells like? This is impossible, android developer uk has to wear perfumes. There are many fragrances and it is not actually possible to generalize that every android developer uk smells that way, whereas developer usa smells differently. This is the main conclusion. Actually there are even more stupid things that we talk about in school nowadays. Instead of talking about pregnancy and avoiding it while you are young, we deal with unimportant details. They call it elements of business psychology. Business psychology? I don"t care how somebody smells like and how a plumber or carpenter can look like. People are different and this rules do not find any usage anyway.
