As I said in another post, they 'study' cause & effect for the individual sport that they are playing but without any concern for the what & why physics of it. Turn your hand this way & this happens. Turn your hand that way & that happens. That is the HOW TO play the game & not the what & why of physics.
Your 'arguments' here are rather interesting & a bit ironic given your stance on CTE.
Best Wishes.
Funny I was going to say the exact same thing about your overly anal position with the concept of objectivity.
My stance on CTE remains the same. Those who put the time in to learn it properly derive the most benefit from it. Especially since CTE is 99.99% objective in my opinion and experience. I.e. far from being a trial and error way to learn to aim it is an objective step-by-step way to align to the shot.
Because people like Hal and Stan and many others have taken the time to study aiming systems and the effects of colliding balls like Dr. Dave does and present their findings it means that many more players are not forced to discover these things on their own. This shortens the learning curve considerably in my opinion.
You speaking for everyone is laughable. You have no idea what goes through Michael Jordan's head when he thinks about basketball or Efren's head when he thinks about pool. You have no idea whether any given person ONLY does trial and error with no thought to cause and effect or whether they actually think about the underlying reason why things happen. As humans are individuals it only stands to reason that people treat any activity across the spectrum of analysis.
For example I often will copy/paste code for my site that was written by someone else without any desire to learn WHY the code works. It produces the effect I want and that's enough. For other tasks I have learned to code so that I can manipulate the results and tweak them on demand.
Anyway, there is no doubt in my mind that today's players are overall better than those of a decade ago, than those 20,30, 50 years in the past. Not individually but on average. And the reason is access to knowledge that is easily available.