lets not forget B filed false paperwork with the FAA when they said trim authority was only 0.5 and thus got MCAS in under the radar as a minor software, then built it with 2.5 units of authority which turns it into a big beast! I would wonder if the 0.5 was a deliberate underestimation just to get it approved, and there was a fair suspicion from the very beginning more than 0.5 would be needed. It's like a child telling a small white lie to a parent to get what they want. Cute in a 5 year old, deadly in an engineering organisation trusted with people's lives. And if they've done it once, there's a high likelyhood imho there's other whoppers out there waiting to be found.
(apologies if the 0.5/2.5 isn't quite accurate, the numbers are buried in this thread someplace..)
G