You say that the MCAS is neither silent or subtle, but there is no light or master caution or anything, just the trim wheel turning and clicking. I’m not sure y

You say that the MCAS is neither silent or subtle, but there is no light or master caution or anything, just the trim wheel turning and clicking. I’m not sure you’d notice it if you were wearing a headset and were being distracted by the stick shaker. BTW the trim wheel has little stripes on it, moves quickly when being operated automatically, and is fairly noisy. It will get your attention. However, my suspicion is that pilots experienced on the NG will mistake the trim wheel doing counterintuitive things for normal STS operation (especially after takeoff). I don't know if the Cessna trim wheel(s) are any quieter or more subtle, but the Cessna certainly doesn't have all the band-aids that a 737 NG or MAX would. To this point here's a post from a 737 NG pilot[1]: As a long-time 737 driver I'll just chime-in a few points [...] (1) Just after takeoff there is a lot going on with trim, power, configuration changes, and as noted above, the darn speed trim is always moving that trim wheel in seemingly random directions to the point that experienced NG pilots would treat its movement as background noise and normal ops. Movement of the trim wheel in awkward amounts and directions would not immediately trigger a memory item response of disconnecting the servos. No way. (2) The pilots could very reasonably not have noticed the stab trim movement. Movement of the stab trim on the 737 is indicated by very loud clacking as the wheel rotates. On the -200 it was almost shockingly loud. On the NG, much less so. HOWEVER, the 737 cockpit is NOISY. It's one reason I am happy to not be flying it any more. The ergonomics are ridiculous. Especially at high speeds at low altitudes. With the wind noise, they may not have heard the trim wheel moving. The only other way to know it was moving would be yoke feel and to actually look at the trim setting on the center pedestal, which requires looking down and away from the windows and the instruments in a 'leans'-inducing head move. On the 717, for example, Ms. Douglas chimes in with an audible "Stablizer Motion" warning. There is no such indication on the 737. [...] Finally, runaway stab trim is a very, very rare occurence up until now. We trained it about once every other year in the sim because it is so rare. And when we did it was obvious. The nose was getting steadily heavier or steadily lighter with continuous movement of the trim wheel. That is a VERY different scenario than what these pilots faced. We also trained for jammed stabilizer, the remedy for which is overcoming it with force. The information they were faced with could very reasonably have been interpreted that way, too. 1: https://www.pprune.org/rumours-news/619272-ethiopian-airliner-down-africa-102.html#post10423122 https://www.pprune.org/rumours-news/619272-ethiopian-airline...