Using "Process Behavior Charts" to Answer This Question
There is also a fairly convincingly better method to shoot free throws - underhanded. As I stated in my post, Why Do People Fail to Adopt Better Management Methods?
People can be very attached to the way things have always been done. Or they can just be uncomfortable with the prospect of trying something new.
Wilt Chamberlain was 28 for 32 from the line shooting underhanded in his 100 point game (the most points anyone has scored in a NBA basketball game).
He was a career 51% free throw shooter (almost entirely shooting traditionally).
But he had a good reason not to use underhand style more often. He felt like a sissy using that style and making them. I am sure the Boston Celtics were happy to let him focus on being scared of looking foolish while they won championships. You are correct if you don’t think I really meant he had a good reason.
This reluctance to use better methods is not limited to underhanded free throw shooting. Managers fail to adopt better management methods every day that are equivalent to failing to improve free throw results using a proven method.