I'm trying to understand why entanglement is said to be "spooky." The model I have is that 2 entangled particles are related, such that they have identical states when measured. The entanglement process is what ensures they have identical states. So it's no surprise they measure out the same. For example, I could have 2 white and 2 black marbles in 4 opaque indistinguishable bags. I then put 2 bags containing white marbles in bag A, and the other 2 bags containing black marbles in bag B. Then I mix bag A and bag B so I cannot tell them apart. Then I select one bag (it is either A or B, but I do not know which.) I open it, and separate the two smaller "entangled" bags. I know they will be the same color, but not if that is black or white. That's my model of quantum entanglement. It makes perfect sense classically. What am I missing?