Oh yes I remember that thread. Apparently I scored 75% Judging. I do think the traditional J vs P dichotomy is a lot more complex once you involve the functions and it doesn't really seem to be very accurate or relevant.
I reread the Ni-dom and the Fe-dom section of Thomson's book. I've decided I'm an XXXX
P and J are relevant in terms of how they describe personality traits. But this has nothing to do with having a messy desk. And it's not a dichotomy, these traits exist along a spectrum. The difference between P and J is only explained in terms of a dichotomy.
If you're a Perceiving "type," you tend to prefer to remain open and undecided. You want to be flexible. You don't need to move in a straight course toward your goal. You're not rigid but adaptable to circumstances. You may change your mind quickly about things.
If you're a Judging "type," you tend to seek closure and make up your mind relatively quickly about things. But you tend to be inflexible once your mind is made up. You prefer to move in a straight line toward your goal. Slow and steady wins the race.
If Thomson's book isn't helping, then it's probably Thomson's fault. Lenore Thomson isn't very good. The stuff she writes about the two brain hemispheres...
Here's what she writes about perceiving:
"For example, because they value the immediacy of direct engagement,
P types tend to be flexible and will change directly easily if something else
seems more interesting or more exciting at the moment. A very high P
score may even suggest resistance to time constraints and external limits."
Here's what she writes about judging:
"J types handle outward events rationally, by anticipating the predictable
and being prepared for it. They don't want their hand forced by
unanticipated circumstances. They want to organize their experience in
advance so they know what's essential and can attend to it in terms of their
goals."
It's probably best not to focus on just the two chapters in that book about Fe and Ni.