Sometimes details are more important than general things. We have all read general descriptions of INTJ, but it's even more interesting to find out about some little things that other INTJ also do. I want to encourage other people of my type to mention them so we can compare which ones are unique and which ones are very common among our type.
--> Great idea!
I'll start:
I love puzzles. Putting them together piece by piece gives me weird kind of satisfaction. If one piece has been lost and the puzzle is left incomplete, it's not nearly as good.
--> I enjoy them too but I don't do them very often because once I start I get addicted to it and must finish. It gets to be an obsession and it means I don't get other, more important things done. And yeah, having a missing piece kind of ruins the thing. I also do crossword puzzles but I'm not as good as them as I am at jigsaw puzzles. With jigsaw puzzles, if I sit there long enough, I will solve it. With crossword puzzles, there are some clues that I'm just not going to get no matter what because my fund of trivia isn't great enough. Which means I have to 'cheat'- look in a crossword dictionary or ask someone.
When talking with someone, I look them right in their eyes. Even when I'm attending a lecture and the lecturer is talking about something that interests me.
--> I have a tendency to look away while speaking. To me having to do the eye contact thing all the time interferes with my concentration.
I have trouble falling asleep because my imagination gets more active when the lights go out. When I was about 11-14, I made up stories and visualized them. It was more about the characters than the story itself. When I was 16, I wrote many short stories.
--> I will make up stories in my head but I don't have any stories out on paper.
I am bothered when I see other people do irrational things. Especially when it's dangerous. (rollerskating down a steep hill without pads and helmet)
--> Yeah, that bothers me too.

hidden agenda, I suppose.