Re: Reminds me of a story
"On similar lines, lots of software interface people talk a lot about "intuitive use patterns", which, if you you have no similar past experience to draw on, are anything but intuitive."
Yup - computer training a couple of decades ago as well and I became aware that some of the participants did not have a clear idea of a window on the screen - the rectangle did not strike them as an entity that could be moved and that was a different region to the underlying desktop. A couple of minutes demonstrating sorted it fine.