That sounds like the difference between the J and P traits in the MBTI system. J-types (judgers) like me (and probably you) tend to plan ahead a lot and like to have matters settled, whereas P-types (perceptors) prefer to keep decisions open and decide how to do stuff when the time comes to act. I would guess that pmarreck is a P-type, or would at least lean towards P.
Wikipedia has more details on MBTI, and there are online self-tests for your own MBTI classification.
Disclaimer: Note the "Criticism" part of the Wikipedia page. MBTI is AFAIK not a tool that professional psychologists would use. Nonetheless, I find it useful in order to find similar people on the internet. For example, if I want to learn a new skill, a search query like "[thing] tutorial for INTJ" gives me way better results than just "[thing] tutorial" because I get recommendations from people who think in similar ways.
Wikipedia has more details on MBTI, and there are online self-tests for your own MBTI classification.
Disclaimer: Note the "Criticism" part of the Wikipedia page. MBTI is AFAIK not a tool that professional psychologists would use. Nonetheless, I find it useful in order to find similar people on the internet. For example, if I want to learn a new skill, a search query like "[thing] tutorial for INTJ" gives me way better results than just "[thing] tutorial" because I get recommendations from people who think in similar ways.