I was thinking about the number of tasks I have that don't appear on any of my lists. These are things with visual reminders. Example: I collect my dry cleaning in my closet. When the spot gets full, I have a visual reminder to go to the cleaners. I move the pile of clothes to the front seat of my car. There it serves as another visual reminder to actually run the errand. When I drop off the clothes at the cleaners, I add into my Palm a Pick up dry cleaning task. Without a visual reminder to do this, I will forget it for a few days until I need one of the items that is at the cleaners.
This is just one example. I don't think laundry and dishes are on anybody's next action list, but they are tasks that have to get done. "Check the dog's water bowl" is never going to appear on my list, but if I walk by and see it is low I refill it. What I am saying is that I am doing a lot more things routinely based on visual reminders than I was really aware of. These all happen to be home-based tasks, but the same thing applies at work.