What would a computer have done on the IGS approach to kai tak?
What would a computer do when the spacing on final gets tight?
What would a computer do at 200ft if it gets a report of possible windshear?
What would a computer do if low on fuel and an aircraft crossed the hold short line, but was not actually on the runway surface?
There are lots of examples in day-to-day operations where the default computer response, or airline SOP would be the less safe course of action. You can't program for everything. What you're talking about is artificial intelligence. We're quite a bit away from that in an airplane. A car can pull over to the side if something doesn't compute. We don't have that luxury.