MPN11,
The wonders of radar were incomprehensible to the operarors as well. Let the cobbler stick to his last ! The Radar Fitters and Mechs know what they're doing, let them get on with it.
Talkdown, Director and Tracker only wanted a Brilliance and a Gain knob to be quite happy - and they already had that in the TV at home, except that "Gain" was called "Contrast" - so they knew how it worked. They didn't need to know any more.
As for a Controller with a screwdriver in his pocket........you might as well give a toddler a loaded pistol to play with ! The mind boggles !
Cheers, Danny.