Tyro said:But this gets thoroughly and regularly tested in the sim so, as long as sim rides are passed, good to go from a brain perspective.
No, it does not.
Flying a checkride in the sim requires very little in the wage of cognitive ability. If you're been in the airplane for a while you know the maneuvers, you know the numbers that it takes to make the sim do the dance. There are few surprises.
Airliners don't crash because someone didn't hold the LOC within tolerance or couldn't hold altitude within 100' while rolling out with 10 degrees on a steep turn. The mistakes that lead to crashes are much more subtle and the key is the crew's inability to detect and correct their mistakes in time. There is nothing in the current system of recurrent training and checkrides which even attempts to quantify this type of cognitive ability.