This might be the reason behind the disappearance of professional physical comedy. I mean, practical (special) effects have largely disappeared too because comp

This might be the reason behind the disappearance of professional physical comedy. I mean, practical (special) effects have largely disappeared too because computer (special) effects are usually cheaper. Slapstick requires not just a sense of humor but also fitness and real effort. I didn't get the impression Jackie said there wasn't talent. Talent is part of the equation, but yes, he openly stated it still took a lot of tries to get right. Most of his movies feature failed tries at the end to give you an idea.