Re: Hey software, get the fuck out of the way!
Multiple redundant do fail, too. In one prominent case, two of the three AOA sensors failed on an A321, which made the safety system to ignore the only sensor that was working and trim the airplane into a dive. The correct mitigating action was to disable the misbehaving system, and that was exactly what the crew of that A321 did. And that's what the crew of the penultimate fight of the crashed Boeing did, too. Everybody lived.