I used to dream of flight systems.
We were expected to follow the Zero Reader into a hole in the ground if it told us to. Worked with valves/tubes. As an ex telecoms tekki on valve equipment, nothing would make me follow that primitive pile of rotting rubber and glass anywhere. There just seemed more time to be aware of the total picture with basic ILS.
When finally I flew the Collins FD 108, I really thought it was quite good, but out of workness caused me to finally have the Smiths System catch up with me. Oh, my. I needed a brain transplant to cope with that.