Even Einstein Questioned the Validity of Quantum Mechanics
The paradox consists of an object that splits into two, both of which have opposite spins, the first has spin ½, and the other -1/2. However, according to the rules of quantum mechanics, neither spin can be determined until measured and one cannot know spin of one particle until the spin of the other is determined, since the two particles are in a superposition of two states. But once one particle's spin is discovered, the other particle's spin is automatically known. The other spin is not only known to the observer, but the particle also knows its spin as well. Before, since it was in a superposition of two states, it had no idea which state it was in, until it was observed. This suggests that the entangled particles sent a message faster than the speed of light.