A great physicist by the name of Richard Feynman said, "I think it is safe to say that no one understands quantum mechanics." What do you think he meant by this? Does this mean quantum mechanics is wrong? How can we know?

Answer 1

He just meant that though we have developed theories of matter and a bunch of equations that reliably describe what we observe, the actual workings are still mysterious. The "why" is not understood. The way things work is so counter-intuitive that while we can do the math, no one knows why it really works.