Because they're SIGNIFICANT changes. It might not look like it at first, but... look, I used to know MBTI functions too and pretty much had to relearn everything. It's possible this is just out of my own incompetence, but I doubt it. Maybe the MBTI folks have changed their understanding over time to be more like Socionic functions, but I also doubt that - when I was there the general attitude was resistance to any Socionics influence. Although, it was from Rocky, Mr. "You all are stupid and wrong, Socionics is way better" so perhaps the delivery played a certain role in people's rejection of it.
I think this is what you're saying, but just to clarify: INTP MBTI functional order is Ti-Ne-Si-Fe, I believe. (See: http://www.intp.org/intprofile.html, a particularly good description.) I think you're saying those are the labels but the functions described are Ni and Te in Socionics terms. Again, see the above link to see if you agree, if you're unfamiliar with the type.Originally Posted by Phaedrus