It's funny, when I first approached this system, I actually knew or thought I was a 4. As an INTJ, I have long known that as a female T I'm in a minority of rationality and occassional directness and even lack of tact at times. But I've also always known we all have it all and I have no lack of feeling. Far from it. So when I did the facial profiling, to me it screamed Type 2. It was then that I figured the 4 was a wall around my true core. Today I'm letting myself be both. More will be revealed.