Boeing 737 Max Update from a Pilot [video]

Starting at 8:10 is the question and discussion about 'well why didn't the pilots just follow the runaway trim procedure?' And the short answer is MCAS upset is more insidious because it's inconsistent and includes a startle factor that pilots have not trained for compared to runaway trim.

~10:30 is an interesting discussion on the unique perspective of a jump pilot, who played a role in Lion Air 34's successful recovery from apparent MCAS upset. This is consistent with the findings in the AF 447 accident, when the off duty captain returned to the cockpit.

Addition: At ~20:50, the assertion is that MCAS also has throttle authority. This is the first I've heard of this. It makes complete sense it would do this if it thinks there's a stall. But it just compounds the problem, by increasing airspeed the stabilizer trim has even more authority over the elevator. But to not tell pilots about what amounts to autothrottle? Incredible if this is born out. (There is a lot of conflict on what all MCAS does or can do.)

This is by far the best explanation with supporting technical details of what is happening. Thanks for posting!