About 25 years ago, I was flying into Boston. Got chatting with a guy well into 60's, who was a private pilot, and also had some seat time on the big stuff, courtesy of friends.
He was talking about the auto-land systems, and said he had been on a flight a week or two before, that was one of the only ones going into that airport that day. He was watching out the window, and that plane executed an auto-land (there is another name for it, just can't recall it....) perfectly - said even when the wheels touched down, he still couldn't see the ground.
Complex systems can execute impressive tasks. Doing it 100% of the time...... another story.
What Boeing has messed up in recent years...... one of the reasons I have concerns with how vehicles get let loose.
What could Go Wrong..... Go Wrong.......
Rgds, D.