The GUI bit is interesting because my experience is that non technical people can't even navigate windows without extra instruction. My teenage job was to trai

The GUI bit is interesting because my experience is that non technical people can't even navigate windows without extra instruction. My teenage job was to train hotel / resort call center agents on using oracle tools and even a CLI tool (if you've ever made a Marriott booking over the phone) then the person on the other end has a terminal open and is entirely using keyboard navigation. Although different workplaces probably give their staff more autonomy which requires their staff to have prerequisite knowledge.