Random ideas and questions:
1) What is self-dualization? Is it about developing 5th and 6th functions, isn't it?
2) What is self-development? Strengthening one's 3rd and 4th functions, 1st and 2nd? All of them(1-8)?
3) I've read healthy people develop 5th and 6th functions and look like their duals
4) I've read healthy people only develop the 5th function and look like their semiduals
5) I think I've read healthy people develop both 1st and 2nd functions and they don't match IMO the Meged and Ovcharov profiles, which are IMO excellent and they describe people that focus "too much" on one ego function . Thus, only unhealthy people match them
6) I've noticed people from rural areas (I mean, those located in Spain) strongly match the Meged and Ovcharov profiles and people coming from big cities are more difficult to type
7) I've heard the Sun will explode in the far future