The problem is that if you do the intuitive thing (which is what pilots are trained to do for most trim overruns - pull on the stick to counter the trim), the M

The problem is that if you do the intuitive thing (which is what pilots are trained to do for most trim overruns - pull on the stick to counter the trim), the MCAS goes through the increasing cycle to full nose-down. It's 40 seconds to realize that your usual strategy isn't working, figure out what to actually do, and then turn off the exact right system.