Jackie Chan is a very good comedy/martial arts star. He does one kind of martial arts that Jet Li doesn't know how to do and Jet Li does a martial art that Jackie Chan doesn't know how to do. You can both go to two Chinese restaurants but both can have different kinds of food.
Our science has become terrible our research dangerous our findings deadly. We physicists have to make peace with reality. Reality is not as strong as we are. We will ruin reality.