I had an interesting conversation with a NW A330 pilot last week and he told me that the newer AB's can not do unnatural things at the hands of human. He said the computer system will keep the AC in flight irregardless of what the pilot does. He said for example that no matter how hard you pull back or push forward on the controls the computer will only allow the plane to climb or decend at a rate that will keep it in the air.

I am certainly not an expert but this guy was very interesting to listen to. Made the ATL-DTW trip go quickly...