It is far too simplistic for anyone to say – “The solution is…….”. In reality, as humans make autopilot systems more reliable, then the human monitoring of those systems will become more frail.
If your autopilot fails to perform as you expect it to perform once every flight, then you monitor it as if your life depends on it; however, if your autopilot fails to perform as you expect it to perform once in a lifetime, then you monitor it as if you depend on it!
I don’t for a second suggest that advanced autopilots are not the way of the future but I do suggest that we still ask the wrong questions and we still don’t have the right answers.
TeeS