First of all I'm a software engineer from Turkey. I have been reading this forum after plane crash.
With all that sensors and their backups, how an autopilot system can not detect a faulty RA sensor and lead to a crash? ( I'm not denying crew side of the problem ) People do mistakes that's human nature. So we use computers with pre-defined rules to make some decisions to eliminate human factor. I mean come on Boeing, am I asking for too much?