I understand - what I was thinking of was not the complexities of flight as the pilot sees them, but purely focussing on the automation aspect - why allow an automatic system to operate the airplane when AoA and pitch gyro are indicating different things? Sure, it's possible both are correct, but the pilots are there to make those decisions. Why allow the automation to continue to pitch down when the altimeter is showing accelerating loss of height? A pilot may indeed do this to recover from a stall, but surely it would be rare to rely on autopilot to get you out of a stall?
I gather there are situations where the pilots are presented with a message that indications disagree, and the automatics effectively hand the matter over to the pilot - I'm just exploring why that isn't the case when to continue with the automatics could result in catastrophe.
Edit: Replying to predictorM9