>From <https://en.wikipedia.org/wiki/Faster-than-light#Quantum_mechanics>:
> Certain phenomena in quantum mechanics, such as quantum entanglement, > might give the superficial impression of allowing communication of > information faster than light. _According to the no-communication > theorem these phenomena do not allow true communication; they only > let two observers in different locations see the same system > simultaneously, without any way of controlling what either sees._ > Wavefunction collapse can be viewed as an epiphenomenon of quantum > decoherence, which in turn is nothing more than an effect of the > underlying local time evolution of the wavefunction of a system > and all of its environment. Since the underlying behaviour > doesn't violate local causality or allow FTL it follows that > neither does the additional effect of wavefunction collapse, > whether real or apparent. (emphasis added)
