Transcription
An electron could be spinning up or spinning down. While a quantum computer, the things can spin in any orientation.
Not only that, but the two spins can interact with each other. That's called entanglement, and that should not exist in a Newtonian world.
But in a quantum world, atoms [music] talk to each other. Then the question is, how fast do they talk to each other? If you signal from one to the other, it turns out it goes faster than the speed of light.