For me, it's more like this:
Originally Posted by Folke
Type 1: Do-first/Consider-first
Type 2: Large cost-benefit ratio for doing it or large penalty for not doing it
I would avoid sending myself a message "Do first" because it sounds too commanding. I design the system to bring certain things to my attention at certain times; whether I actually do them is up to me to decide at the time.
Something can be extremely important, yet now might not be the time to do it for various reasons. One still needs to be able to focus on eating, sleeping and other things, even if one has something extremely important to do later on. I would try not to have reminders come up until it's time to do it, or time to do something about it, e.g. time to avoid putting something else on the calendar that conflicts with it.
Inability is an abstract thing involving comparison with alternate universes; it cannot be experienced.