The Best Tested Theory in Science

The Turing principle sort of underlies the way we think of science whether you are explicitly accepting the idea or not. quantum mechanics has been tested down to like the ninth and tenth decimal point I mean this is a probabilistic theory so that might be a little surprising but there are no known counter examples unlike general relativity where we know black holes defy the theory and break the theory. We don't really know of any places where quantum mechanics breaks other than the obvious that it doesn't encompass gravity for some reason.