Recent proposals in quantum gravity have suggested that unknown systems can mediate entanglement between two known quantum systems, if the mediator itself is non-classical. This approach may be applicable to the brain, where speculations about quantum operations in consciousness and cognition have a long history. ...Roger Penrose was widely mocked for advocating ideas like this. No one has made much progress on the problem of consciousness, and I am skeptical about this, and the next story.
Our findings suggest that we may have witnessed entanglement mediated by consciousness-related brain functions. Those brain functions must then operate non-classically, which would mean that consciousness is non-classical.
Separately, I heard a rumor that a string theory prediction about holography has been confirmed in a quark-gluon plasma: