My other ditherer hell moment is being in the security queue behind ditherers at an airport. Even if you are on your first ever flight, you are now bombarded with information from live people and animated films as you queue, about taking off your coat, shoes, belt etc - and, above all, on a busy day, you will almost certainly have watched fifty people in front of you take off their coat, shoes, belt etc. There's no excuse for not knowing what is expected, even if you have just arrived from Mars!
Why then, are the ditherers baffled and taken aback when they arrive at the front of the queue? Why do they start, with a surprised air, to unlace their 20-hole Docs, and begin to pat their trouser pockets for small change and forgotten phones? Why does it surprise them every time that their large bottles of water are confiscated, and that their laptop must be taken out of its case?
If I can get out of my shoes, coat and belt, put everything on the conveyor belt, take an iPad and a laptop out of my bag, give a bottle of milk to the security person for testing, walk through the security gate with my toddler, retrieve my stuff, put iPad and laptop back in my bag, and get back into said coat, belt, shoes etc without holding up the queue behind me, surely you can speed it up a bit???
(Obviously not speaking about anyone with mobility difficulties here, lest I sound like some disablist maniac...)