Failure Mode Analysis
During design and certification it is incumbent upon the manufacturers and agencies to consider an "infinite" number of failure modes and satisfy themselves that systems and software will react to failure modes in a manner that does not compromise the safety or integrity of the aircraft.
Human fallibility will surely miss something along the way, as any software designer will attest. The design response to this is to provide redundancy.
The few data that seems to be emerging here does suggest that here could be a situation where the system responses may not have been appropriate. It is a moot point as to whether human control responses may have been more suitable.
For this reason it is critically important to recover as much evidence as possible.