Originally Posted by
Notanatp
How much would it have cost them to perform some kind of sanity check on the AoA input (assuming single sensor input)? Zero.
How much would it have cost them to design MCAS so that it stopped trimming down at a position short of the max stab trim position? Zero.
How much would it have cost them to design MCAS so that it stopped activating if it was repeatedly interrupted by ANU MET? Zero.
How much would it have cost them to leave the cut-out switch logic the same? Zero. (note: it's far from clear this had anything to do with either accident)
I agree in so far that compared to the costs piling up now it is close to zero.
However, the actual costs of all the above are not zero. We are talking bronze age embedded systems not iPads. Nothing is easy there. Limited resources - not money wise - may also have been an issue coupled with time pressure.