A lot of my engineering friends seem to write off the MBTI as some psychology pseudoscience like astrology. I think there's some truth to it, but it's certainly not a cut and dry science.
It is a theory that many people are finding works and confirms their real life experience, short story if it quacks like a duck and if it looks like a duck. But you are ofcause allowed to continue thinking the earth it flat until you are shown prober proof for something else.