The cool thing about MBTI, is that someone could use the first post from OP as fodder for typing them, based not on their self-attributions in the beginning, but rather on the way they frame the dichotomies.
1) being a doctor or any kind of not war- or comic-related being doesnt really fit into that system
2) The distinction between thinker and doer does imply that I start in every moment without any kind of information. So I have to decide, whether I think my way thru it first or just do a thing. So it totally lacks the fact of experience.
3) The inate self-confidence of the Seeker type is unrealistic and more like wishful thinking. It is more likely that a seeker of adventure is prone to experience more failure than success, what would make him be like the evolutionary ancestor to the Responder.
"How dreadful!" cried Lord Henry. "I can stand brute force, but brute reason is quite unbearable. There is something unfair about its use. It is hitting below the intellect." ~ Oscar Wilde - The picture of Dorian Gray