Back in the days when I used large photocopiers, I was always amazed how well the machine could guide me through the process of clearing a paper jam, while at the same time being completely incapable of preventing such a problem.

It always struck me as odd that the manufacturer put all that effort into helping me help myself, instead of simply eliminating the need for help in the first place. Fortunately I spend very little time these days in front of Buick-sized copy machines. […]