From a rather commonly seen list of INTP weaknesses:
I realize it says "usually," and I realize it applies to more types than just INTPs, but...Not usually good at practical matters, such as money management, unless their work involves these concerns
Is it me, or is "Not  good at practical matters" one of the most damning things that can be said about a person? I think it basically means, "sucks at life."
I hate that statement on the list. I hate it even more because it might be true. I desperately want that statement to not apply to me. How do I make that happen? How do I make use of my INTP strengths to ensure I am GOOD at practical matters?
Of course I want to be good at things that are actually used or practiced. Why would things actually being used or practiced lend themselves to be difficult to INTPs?concerned with actual use or practice
Second definition from word-web.princeton:
I think this presents a false dichotomy. I believe in the creation and use of theories based on practical experience and observation. Everyone has a set of assumptions that they work with. Creating a theory out of them, makes these assumptions explicit and therefore more amenable to examination and correction.hardheaded: guided by practical experience and observation rather than theory