Quantum physics is about probabilites: the probability that some form of matter will be in one place or another at any given moment. And that position is mutually dependant on momentum. We will only which position and momentum the particle has once it has been observed. Before that, it has all positions and all momenta.
That is called the superposition.
And that is revolutionary.
If you think you understand quantum mechanics, you don't understand quantum mechanics.
RICHARD FEYNMAN
