There are many physics theories that have not been contradicted by serious evidence to the contrary. That’s a ‘strong’ theory.
In the past century, quantum mechanics … while “noone understands it” (Feynman) has led to many inventions (and much confusion). Einstein’s relativity has stood up well to many, many tests. If you go back to ‘classical physics’, Maxwell’s (more understandable) conclusions about electromagnetism have never been off the mark.
There are many physics theories that have not been contradicted by serious evidence to the contrary. That’s a ‘strong’ theory.
In the past century, quantum mechanics … while “noone understands it” (Feynman) has led to many inventions (and much confusion). Einstein’s relativity has stood up well to many, many tests. If you go back to ‘classical physics’, Maxwell’s (more understandable) conclusions about electromagnetism have never been off the mark.