I think it is quite amazing that such lessons are only being learnt in the 21st century...
Interesting comment, wrong conclusion.
Boeing positively
knew about large powered rudder abrupt cyclic movements a long time ago, circa 1950's, with the original B707.
Large airline training departments as well, as nearly all of these airlines had B707 aircraft in their fleets.
Page forward many years, the old hands in the training departments(s) retire, new young turks in charge who, quite frankly wouldn't know a B707 if they saw one (let alone having actually
flown one), introduce an abrupt control 'advanced'
maneuvering training program...and find, through the inappropriate use of the powered rudder, severe structural failure, and much loss of life.
The majority
blame for the loss of the AA A300-600 rests squarely at the doorstep of American Airlines, and nowhere else.
Minority blame can be attributed to the specific aircraft design.