If it ain't broke don't fix it...
Tiger Woods is a Golf savant. Perhaps the greatest ever. He has won every major tournament and a couple of years ago seemed unbeatable.
Then he decided he needed to be better. He has not been winning recently because (per Woods) he has been working on a new swing that he believes will improve his game.
Interesting what some will do in the pursuit of excellence.
How many would do what he has done?
If the new swing become too elusive can he go back to his old swing?