Consider telling a student to put his coat on to go home at the end of the day. It seems self-explanatory. Yet when you think about it, there are several steps involved. Where is the coat? If the student isn’t already holding it, he has to go to a location to retrieve it. Once that is accomplished, how does he put on the coat? He could just stick his arms in, but then it would be backwards. He could lay it on the floor, stick both arms in upside down and then flip it overhead, but that in itself is three steps. He could put one arm in and then send the coat around his back until he finds the other sleeve to put his arm into – three more steps. Finally, should he just leave the coat hanging open? Is there a zipper, snaps or buttons? Working any of those fasteners requires several operations. So, the simple instruction of putting on a coat to go home is not as simple as it may have initially seemed.