It occurrs to me that one of the reasons that something like moving takes so long is a phenomenon I’m calling decision fatigue. This is what happens when you have to figure out whether this item, 157th in a series of several hundred, is something you want to keep or something you can throw out. A similar version happens during any major cleaning project. It’s also why data entry people attempt to keep their data as uniform as possible; the more decisions the enterer has to make about which pieces of data to keep and where to put them, the more unhappy they’re going to be and the more mistakes they’ll make. Eventually, one gets to the point where one’s picking up things and just staring at them for 30 seconds or so, trying to bang one’s brain into some decision. This both takes longer and is likely to lead to bad choices.