When I was a kid, my elementary school gym teacher was a man named Mitch Miracle. He was something of a local legend, an inadvertent sign of the crushing poverty - both economic and otherwise - of the local community. He had played basketball in the ‘70s for Marietta College and, as far as I know, still holds the school record for career free throw percentage. His technique was so perfect that it was said he put the same exact spin rate on every single shot he took.
He never taught me how to shoot like that. He was an asshole and he hated me.