Also the change over from a solid visible control panel with a combination of switches, knobs and dials, buttons, LEDs, and maybe an LCD readout, all clearly la

Also the change over from a solid visible control panel with a combination of switches, knobs and dials, buttons, LEDs, and maybe an LCD readout, all clearly labeled, to more modern stuff with just a few barely distinguishable unlabeled buttons so tiny you could very easily accidentally press one. And now touch screens where who knows what will happen if you accidentally brush the screen and it interprets that as some secret hidden swipe gesture.