Airplane automation has shown to be rather bad at diagnosing what is wrong and coming up with a workaround.

For example, engine falls off. The automation doesn't know that happened, it just sees various problems like the hydraulic pressure falls, and for some reason the engine thrust went to zero.

When I was at Boeing, an incident was recounted to me where the autopilot glitched and rolled the plane over into a vertical dive. It was going so fast it entered "separation", where the airflow no longer flows over the flight controls. In other words, the pilots were just along for the ride.

But the pilot figures, since we're dead anyway, let's try lowering the landing gear and see if it slows the jet down. He did, and it ripped the doors off and bent the gear back, but it slowed enough that the flight controls could get a "bite" and the pilots were able to regain control and landed safely.