>literally cannot fly without the MCAS system functioning perfectly. This is not the problem. The aircraft's performance is within the bounds of "perfectly ac

>literally cannot fly without the MCAS system functioning perfectly. This is not the problem. The aircraft's performance is within the bounds of "perfectly acceptable for what it is" but it is too different from the existing 737s in a particular area. If the portion of the MCAS that handles this particular area were just turned off the MAX would fly fine but it wouldn't be close enough to a 737 for anyone to say with a straight face that pilots can fly without retraining. This need for pilot compatibility lead to a faulty implementation of MCAS of which flies the plane into the ground in certain conditions.