Comment by outworlder

Yes, but it was also a problem of relying on just one AOA sensor. That was approved across the chain of command and deemed "good enough". It's pretty clear to anyone that a critical system such as this should not rely on just one sensor, which may be faulty.

But they thought that, since the pilots would just have to do the 'runaway stabilizer procedure', it would be enough. They didn't consider how startling and different the system would feel.