The famous Bell experiment would somehow proof non-locality and/or traveling of information faster then light. A very simple explenation of the experiment is this: there is a subatomic event that creates a particle pair going opposite directions. The subatomic event determines the possible outcomes, as for example if one particle has spin up, the other must have spin down (conservation law). But in the quantum mechanical sense, we don't know which particle has spin up and which has spin down. So if we examine (observe) one particle and find it has spin down, this the determines the other observation, that the other particle has spin up. But QM says both particles are in undefined states before observing. Somehow then the act of observing one particle and indentifying it's spin causes the other particle to behave as determined by the other observation. The two particles, before detection, can be at very long distance from each other at which no interaction could take place between the two observations, considering the speed of light. This then somehow gets interpretated as non-locality or faster-then-light travel of information. But there is a more simple explenation. The state of both particles are already determined when they get created in the experiment and from the physical laws we know one has spin up and one has spin down. Just that we can't identify which particle has spin up and which has spin down. So, identifying one particle is in fact identifying both particles. Nothing mysterious. It doesn't involve non-locality or faster-then-light travel of information. (another way of looking it is this: instead of the unknown spin which gets detected, we could also say we already know which particle has spin up and which has spin down, the only thing we don't know if the spinup particele goes left or right, and likewise wether the spindown particle goes right or left, just that we know they go opposite directions. If we detect the spinup particle to go left, then we for sure we know the spindown partice went right. In this way of interpreting this QM experiment, we see that there is nothing mysterious about it: no non-locality involved or faster-then-light travel of information.) PS> I don't know if the actual experiment involved measuring spin, it could also have been some other conserved quantity, like electric charge, for example the particle pair creation of electron and positron.