Out of curiosity, what do you think the MBTI type of mathematician John F. Nash Jr. would be, based purely off the movie? How would this compare with the real John Nash? In other words, what do you think his type is, and do you think his MBTI type as portrayed in the movie is different from that in real life? As usual, I have a strong idea about the answer to this, yet I am interested to hear some other peoples' responses. Also, what are your reasons for your choice? I will attempt to play devil's advocate.
P.S. Also, if you are in the mood, try typing the other main characters in the movie. If you are really in the mood, try deciding John Nash's enneagram, Oldham, and/or Socionics type.