Sabine Hossenfelder, author of Lost in Math: How Beauty Leads Physics Astray, Her message from the “ depth of abstract math” is that “We know that quantum mechanics is wrong”:
You can use this theory to make predictions for any experiment where the creation and destruction of particles does not play a role. This is the case for all your typical quantum optics experiments, Bell-type tests, quantum cryptography, quantum computing, and so on. It is not merely a matter of doing experiments at low energy, but it also depends on how sensitive you are to the corrections coming from quantum field theory. So, yes, quantum mechanics is technically wrong. It’s only an approximation to the more complete framework of quantum field theory. But as the statistician George Box summed it up “All models are wrong, but some are useful.” And whatever your misgivings are about quantum mechanics, there is no denying that it is useful. Sabine Hossenfelder, “Quantum Mechanics is wrong. There, I’ve said it.” at Back(Re)Action
Do we know that quantum mechanics is wrong and, if so, how can it be useful?
See also: Sabine Hossenfelder: Has The Large Hadron Collider “Broken Physics”?
Neurosurgeon Michael Egnor: Physicist Sabine Hossenfelder Is Really Confused About Free Will
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