I'm reading up on interpretations of quantum theory, and I just came across Bell's theorem, which is confusing me. My main concern is this: Why would quantum mechanics predict something different than hidden variables? I hope that question is coherent enough. I'm not sure if I'm using the correct lingo. But basically I'm not seeing why "spooky action at a distance" would allow for different outcomes than local communication between systems, or just a situation where the values of aspects of the systems are defined, and we just can't know them. Thanks in advance, and I'll be happy to try and explain my confusion better if necessary.