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. Any photograph can have minute details pulled out of it. You can zoom into any picture as far as you want to.