I ran into a problem with understanding some strange stuff I know you guys will know. When dealing with entanglement, if system A is spinning up then system B approaches 100% probability of spinning down without nessecarily being observed, that contradicts my feeble understanding of shroedingers observable reality in that system B does not have deterministic properties unless it is being observed, right? Therefore, how can it have any probability of spinning down if it has no deterministic properties in its unobserved state but is ultimately entangled? In addition, how would we know that it's entangled if we don't observe it? And doesn't this kind of smack of ethos physics if the entire universe is entangled on a level beyond the speed of light appearently or maybe? I'm so lost please help smart people.