Did you ever wonder why quantum mechanics (QM) is so heavily mathematical that it is impossible to get an intuitive feeling for it? It is because from the beginning there was a mistake in the QM picture of reality. In Nature quantum particles follow waves backwards. If you doubt that, try looking at the 6 minute lead video on this website. Since Nature violates our expectations, the experts couldn’t picture it.
If you build your mathematics on the way Nature really works, you end up with probability amplitudes that are the negative of the QM probability amplitudes. When we test our theory in the lab, we follow the Born rule: we square the amplitudes to get a probability. So if “K” is the amplitude according to quantum math, and “-K” is the amplitude according to Nature, then the probability is: P = |K|^2 = |-K|^2. That means that quantum math is dead accurate, but we can’t organize a picture of the quantum world because we got it backwards.
The most accurate of all quantum sciences is Richard Feynman’s Quantum Electrodynamics (QED). If the distance from Los Angeles to New York City were measured with this degree of accuracy, then the error would be less than the width of a human hair. I have shown that Feynman integrates his path integrals from the particle source to the detector, whereas Nature integrates in the opposite direction. If Feynman’s Propagator (or Kernel) is “K”, because Nature integrates from detector to particle source, the correct amplitude is the Reverse (“R-Propagagor”) with an amplitude of “-K”.
Jeff Boyd’s Reverse-QED is so accurate that if the distance from Los Angeles to New York City were measured with this degree of accuracy, then the error would be less than the width of a human hair. R-QED equations have swapped the bounds of integration of the QED path integrals.
Thus QM gives you a picture which is the mirror image of reality. Because of the Born rule the probabilities are accurate. Because they got everything backwards, they can’t explain the quantum world to students. So we students of the quantum world don’t get a clear picture from our teachers.