Well, there's project support material and there's project support material. In other
words, (in theory at least), I can have a pile of papers that I may want to riffle through
while working on a project, and I can also have one single sheet of paper with the
lists of the main steps on the project, that I can quickly read over when reviewing,
check off what's done, and get a feel for how far along I am in the project. And
possibly a mind-map about the project, to glance at. One can also limit the number
of projects that are considered active that week.
Single-actions (things too small to be projects) don't need that kind of review.
Inability is an abstract thing involving comparison with alternate universes; it cannot be experienced.