No matter what kind of computer disk it is, it'll be readable by any system you put it into. All application software is usable by all computer platforms. The more high-tech the equipment, the more buttons it has. However, everyone must have been highly trained, because the buttons aren't labelled. Computers never crash during key, high-intensity activities.
Humans operating computers never make mistakes under stress.
Programs are fiendishly perfect and never have bugs that slow down users.