Optimizing for the wrong metric, part 1: Microsoft Word.

The boss needed item 3 inserted into a numbered list of hundreds of items. The intern used a mouse to select the original 3 on the screen, then typed 4, then selected the original 4, then typed 5, then scrolled down, then selected the original 5, then typed 6, and so on. Another intern sat watching the screen to make sure there were no mistakes.