Implementor of similar systems here. 1. It's possible, but you have to understand that a pilot, however bright he may be, cannot be overloaded with too many mo

Implementor of similar systems here. 1. It's possible, but you have to understand that a pilot, however bright he may be, cannot be overloaded with too many modes of operations. You can't always have Neil Armstrong driving... 2. We have to wait for the conclusions of the investigation. There is obviously still a lot of question marks about what /should/ occur and what /did/ occur, so it's difficult to speculate (at least for me) on what a correct implementation of the system should have been. 3. Each sensor has pros and cons. For an AOA, I am not an expert, but well, it's supposed to measure the lift under the wing, so I don't see how you can avoid being outdoor to get a direct measure of this quantity. I believe someone on HN more expert could give more insight here, but my experience when you try to use indirect sensors is that it générâtes the need for /more/ computational complexity to deduce the intended measure from indirect sources. For your last comment, I would complement that auto pilots malfunction due to sensors going bad /unnoticed/. We should take "going bad" very broadly: either the sensor is broken, or it is not picking up something that it should because, well, the designer just did not think about it.