We had once an intresting discussion about the nature of the type descriptions. If you imagine that the mbti theory would have been developed in a communist system, the type description would have probably been completly different. The intresting thing about the titles we have in that regards is that they are all somewhat job related and it's in fact often that mbti is used as a career test for people. So is mbti an instrument to find your real self or is it a mere instrument to make you a good peon of society who does his job ?!