[mikewarot]

It was the days of MS-DOS. I had written a program to manage the inspection of Fire Extinguishers in Fossil Fuel generating stations. The Operations manager pulled a random person in, explained to them that he understood they weren't trained for this, and anything that was wrong was MY fault, not theirs. He gave them a list of things to do, and told me to watch and not say anything.

The user got stumped at 1 second into the task... and I blurted out "just press F1 for help"... to which the reply was "How is he supposed to know that?"... and thus began my education of building appropriate user interfaces. F1 was ALWAYS on the screen after that, and I learned lots of things about the differences between someone just trying to get a job done, and my view of computers.