"Wikipedia:<quoted text>A scientific theory has been tested repeatedly and is correct for all observed results.
If anyone finds a case where all or part of a scientific theory is false, then that theory is either changed or thrown out.
A scientific theory in one branch of science must hold true in all of the other branches of science.
"For decades, every attempt to describe the force of gravity in the same language as the other forcesâthe language of quantum mechanicsâhas met with disaster
S. JAMES GATES, JR.: You try to put those two pieces of mathematics together, they do not coexist peacefully.
The laws of nature are supposed to apply everywhere. So if Einstein's laws are supposed to apply everywhere, and the laws of quantum mechanics are supposed to apply everywhere, well you can't have two separate everywhere.
BRIAN GREENE: In the years since, physics split into two separate camps: one that uses general relativity to study big and heavy objects, things like stars, galaxies and the universe as a whole and another that uses quantum mechanics to study the tiniest of objects, like atoms and particles. This has been kind of like having two families that just cannot get along and never talk to each other...
There just seemed to be no way to combine quantum mechanics...
and general relativity in a single theory that could describe the universe on all scales.
So here's the question: if you're trying to figure out what happens in the depths of a black hole, where an entire star is crushed to a tiny speck, do you use general relativity because the star is incredibly heavy or quantum mechanics because it's incredibly tiny?
Well, that's the problem. Since the center of a black hole is both tiny and heavy, you can't avoid using both theories at the same time. And when we try to put the two theories together in the realm of black holes, they conflict. It breaks down. They give nonsensical predictions. And the universe is not nonsensical; it's got to make sense."