Pardon me for asking a very simple question, but this is something that I'm confused about. If we have a pair of entangled particles, and we measure the state of one of the particles, then the state of the other particle becomes fixed instantaneously. But what if we have three entangled particles, and we measure one of them, what happens to the other two? Why? How does measuring one of them tell us the state of the other two? But isn't this what happens when we interact with a group of entangled particles? Interacting with one particle causes the whole system to collapse? It would almost seem as if there must be a causal order among the particles, a chain if you will. Such that interacting with one particle has an instantaneous ripple effect across all of the particles. Or am I simply misunderstanding entanglement?