> I can't imagine the logic for that since two sensors are physically present My understanding for that is that if you look at two sensors, then a disagreement

> I can't imagine the logic for that since two sensors are physically present My understanding for that is that if you look at two sensors, then a disagreement can happen, which has to be resolved somehow. In the case of MCAS, this would likely be turning MCAS off and telling the pilot, which would require training on what that extra warning light meant and would have required telling the pilots about it, jeopardizing the type rating. Looking at only one sensor means the system "cannot fail"...