Actually, I think they designed it so even a 7 year-old not learning calculus could operate it (height of control panel notwithstanding).  There were only two function buttons to push - "vacuum" or "pressure", which wouldn't work until after the door was fully closed as safety precaution.  No "Stop"  button as that was controlled in tandem by the door-open switch, so hope that one never wears out or malfunctions or anything due to someone incessantly pressing/smashing the switch button despite that college degree in "Pressurization chamber operating button mechanics and how to be patient with the patient".  And the de/re-compression interval was preset* so one didn't need to be some technical geek about something that could be otherwise hazardous. and best left to professionals in their field so the person inanely smashing buttons could be better suited to their profession where, if the situation were reversed and yon medic was trying to figure out a phaser or something and, oops, has it pointed the wrong way because the art deco design made the lens look more like a recharge port or who knows... never mind all of those alluring, bright and flashy controls on the bridge consoles...