This is an idea that a friend of mine had (I'm keeping them anonymous for now because I'm not sure they want the attention). Anyway, they believed that J's think symbolically, which would mean through words/numbers/icons. P's on the other hand, supposedly think graphically/visually, which would explain to me why their thoughts seem to be less fixed, like a movie that changes scenes from one moment to the next, and mine are arranged more like a book. I can't verify this idea, but it seems at least plausible, since interpreting reality through words, which point to things in a more specific way than pictures, would lead to slightly more predictable and rigid behaviors.
As for myself, I usually have to use language to comprehend my thoughts, and when I see a picture/envision something, I almost immediately translate it into words/symbols to make sense of them to myself and others. Language is also my strongest skill set.
So, do all Perceiving types think graphically, or do some of you think in words as well? Do all other Judges think in words/symbols? I don't know where this theory came from, and I'd like to see if it actually applies to most people's preferences.