Caveat, ignorant answer coming: what I understand is as follows: we know that entangled quantum states can "communicate" through space-time (what Einstein calle

Caveat, ignorant answer coming: what I understand is as follows: we know that entangled quantum states can "communicate" through space-time (what Einstein called "spooky action at distance"). The paper therefore proves that either unconnected (not entangled) quantum states can communicate, or the wave function is real. They proceed to conclude that the first member of the alternative is less likely (justifiably I suppose).