End-users, if nothing else need to understand the concept of the systems to be able to use it properly...Or else all they do is keep hitting the on/off button lol

I dunno guys. I would suggest that if your programming requires the end user to fully understand the system to be able to use it, then your programming isn't adding much value to the system. The point of good user interface is to make complex systems usable by average people with little or no training.