Anyone who is not shocked by quantum theory has not understood it.
– Niels Bohr
I think I can safely say that no one understands quantum mechanics.
– Richard Feynman
but it is certainly the case that, though we know how to do the sums, we do not understand the theory as fully as we should. We shall see in what follows that important interpretative issues remain unresolved. They will demand for their eventual settlement not only physical insight but also metaphysical decision.
– Quantum Theory: A Very Short Introduction, John Polkinghorne
Arts & Culture: Poetry Takes on Quantum Physics
https://physics.aps.org/articles/v11/103
What can the quantum world do for business?
https://physicsworld.com/a/what-can-the-quantum-world-do-for-business/
So every time we turn off our mobile phones, USB sticks, memory drives or data centres, all the stored data doesn’t get wiped. Quantum mechanics delivers again.
And every time you write data onto NAND Flash, you’re using one of the most surprising and successful predictions of quantum mechanics. I’m referring to barrier penetration, or tunnelling, which allows a low-energy particle to penetrate a high potential-energy barrier.
What Has Quantum Mechanics Ever Done For Us?
https://www.forbes.com/sites/chadorzel/2015/08/13/what-has-quantum-mechanics-ever-done-for-us/#31c890740468
‘It’s a Mess’: A Brain-Bending Trip to Quantum Theory’s 100th Birthday Party
https://www.quantamagazine.org/its-a-mess-a-brain-bending-trip-to-quantum-theorys-100th-birthday-party-20250808/
The magic happens at the moment of measurement, and so the mystery is known as the measurement problem.
While Heisenberg and Bohr felt deeply interested in the philosophy of their theory, they ultimately punted on these questions.
Entanglement really happens!
Interpretations of quantum mechanics are a bit like the quantum state itself.
Gravity is currently the only force in physics for which there is no quantum description. Instead, gravity is described by Einstein’s general theory of relativity.