The first of these is applicable to either type. Both ITPs have extroverted percieving, which is present orientated. Introverted percieving, which handles temporal planning, is tertiary in both cases. However INTPs use Si, which tends to be more backward looking, extrapolting from what has happened before to predict the future andd find the safest, most sure path to proceed along.
- I am quite impulsive and live, to a good degree, in the hear-and-now.
- I spend most of my day coming up with different scenarios for my future and fantasizing about what it'd be like to be in those scenarios.
What you describe in your second point here is actually an Ni out look, picking out a future possibility that seems favourable, then seeking to make it happen. So this actually points towards ISTP more than INTP.
The important thing to remember is that your drive to take action comes from your extroverted percieving, not your introverted thinking. When you stop reading your books, musing in your thoughts and actually take action, what are you doing? Are looking to experience the world first hand, explore what's out there and just see what things are like for yourself?
- My students have complained about my manner of speaking being too abstract. In fact, a few of them even said that they wished I would put things in more concrete rather than "philosophical" terms.
- My interests are, and have always been, theoretical and conceptual in nature. That's why I went to grad school in the humanities.
- I really do spend a good portion of each day thinking about type theories, and have done so for a good two years now (save a couple month period where I was bogged down with work and didn't have time to think about anything that I liked.)
Or are you exploring how the world relates to the abstract ideas that interest you? After you've read about the building of the pyramids of egypt how strong is the urge to go out there and examine them for yourself?To walk around them and live the history? To touch them and feel the connection to the abstract idea of history? That is an Ne attitude. The Se attitude might still want to look at them, but for different reasons. Se might want to see what people can build without the aid of modern equipment, to feel the heat of the desert so you just how hard it would be to work under those conditions. It is interested in the sold aspects of the pyramids existance.