This is a rather pedantic question, but I'm asking it in order to understand better how to deal with Next Actions. So, going by the book definition of Next Actions, is there a case where one might enter a single action in this category? For example, if I wish to read a book that I have on my library shelf, but never bring myself round to doing it, could I record as a next action in Someday/Maybe or is this category limited to multiple action things i.e. Projects?