Hello, Socionics Board. I've discovered Socionics.
The system looks very interesting, but I'm currently overwhelmed by all the terminology, which leads me to the conclusion I should focus on the fundamentals first. Assuming there are eight 'functions', or 'facets of reality', or whatever, why is it that they can only be arranged in 16 ways? Why not 8! (eight factorial - 40320) ways - is it merely for convenience? Basically, why does the second function necessarily contradict the first function in both rationality and extroversion? Why do the seventh and eight functions necessarily mirror the first and second functions respectively? It makes for a very elegant 'Model A', but...why?