We’ve done pretty well with quantum theory as well, but when we try to integrate that with general relativity, we get nonsense answers. So at least one of those

We’ve done pretty well with quantum theory as well, but when we try to integrate that with general relativity, we get nonsense answers. So at least one of those incredibly accurate, incredibly useful theories is incomplete or wrong in some way. Dark matter seems to make up about 25% of the universe. It seems to obey general relativity (that’s how we inferred its existence), but not quantum mechanics (we cannot seem to interact with it electromagnetically, e.g. see or feel it). Something is making distant galaxies accelerate away from us. Taken as an amount of energy, that’s about 70% of the universe. It’s accelerating a lot of mass! Often called dark energy. This is all to say that despite our success with the physical theories we believe in today… we still have some pretty darn big unanswered questions in front of us. It seems a little early to be definitively ruling things out.