The absent-minded professor There are three variants of procrastination, depending on what you do instead of working on something: you could work on (a) nothing, (b) something less important, or (c) something more important. That last type, I'd argue, is good procrastination. That's the "absent-minded professor," who forgets to shave, or eat, or even perhaps look where he's going while he's thinking about some interesting question. His mind is absent from the everyday world because it's hard at work in another. Paul Graham, Good and bad procrastination procrastinationproductivity
To serve as a reminder Looking back at my notebooks now, the information seems fairly sketchy, often abbreviated, and fairly uninformative. The purpose was merely to serve as a reminder for when, that evening, I would write up my notes in a proper field book. James L. Reveal, The Evolution and Fate of Botanical Field Books Mental infrastructure memory