Full Idea
Quantum mechanics is the only working description of the universe that we have. It is amazingly precise, and so far every experimental test has verified its predictions.
Gist of Idea
Quantum mechanics is our only theory, and is very precise, and repeatedly confirmed
Source
Gavin Hesketh (The Particle Zoo [2016], 02)
Book Reference
Hesketh,Gavin: 'The Particle Zoo' [Quercus 2016], p.43
A Reaction
I take it from this that quantum mechanics is simply TRUE. Get over it! It will never turn out to be wrong, but may be subsumed within some more fine-grained or extensive theory.