Outside of the realm of speculative theories about how measurement works (none of which have managed to really shed any light on the matter yet), there's not mu

Outside of the realm of speculative theories about how measurement works (none of which have managed to really shed any light on the matter yet), there's not much known here other than "that's what happens when you use the prescribed rules for measuring a quantum system on a particular quantum state we call entangled." I promise if we ever get a concrete answer to that question it'll get posted to HN shortly thereafter XD. > It also sounds like a great way to tell if your information has been unknowingly accessed when it's travelling between two supposedly secure locations. That's actually one of the currently possible applications of quantum mechanics to cryptography[1]. There are already multiple commercial implementations! [1]: https://en.wikipedia.org/wiki/Quantum_key_distribution https://en.wikipedia.org/wiki/Quantum_key_distribution