I'm a newbie to theoretical physics and I'm having difficulty accepting quantum mechanics. For starters, it sounds like the validity of quantum mechanics rests solely on the shoulders of Aspect's experiment (which sounds a bit far fetched to me). If I understand correctly, the experiment involves two entangled particles that are being analyzed by two different sensors. The sensors can only detect the spin direction of each particle about a given axis. Since the two particles must have the same spin (because they are entangled particles), simply measuring each particle's spin using each corresponding sensor set to the same axis should reveal identical results for every run. Instead, Aspect chose to measure the rotation about three random but specific axes and then see how many times the rotations were detected as identical. According to Aspect, the rotations of the two particles should be in the same direction more than 50% of the time. Simply put, there are nine possible combinations of clockwise and countercockwise rotations between the two particles. If the particles both have the exact same spins, then they will both have the exact same rotations for each of the three given axes. Regardless of what those rotations are (assuming they are not all identical), the results of the test should reveal that the rotations are in the same direction 5 out of every 9 runs, which is obviously greater than 50%. Here is where the experiment is flawed. Aspect's experiment assumes that every set of particles will have the exact same spin. Otherwise, the rotations about each axis will change for every set of particles. While one set of particles may have a clockwise rotation at a 54-degree axis, another set of particles could easily have a counterclockwise rotation about the same axis. Am I missing something, or are all of the particles used in the experiment virtually identical? If they are not all identical, then I don't see how the experiment is valid. My math says the rotations of each set of particles should be the same exactly 50% of the time (which is exactly what the results of the experiment revealed). It seems impossible that all the great minds in physics could have overlooked such a simple error, so I'm sure I must be missing something. SOMEONE PLEASE ENLIGHTEN ME!