As for the meat of the text (pardon the pun, I just re-read “they’re made out of meat” yesterday), my amateur understanding is that there may be some degree of quantum effects in the microtubules of the brain, but that decoherence is very localized and limited, thus unlikely to have broader impact on physical systems at large. To this end, it’s unclear how a shared physical reality such as ours would allow for quantum effects from a measurement experiment, through the non quantum systems to the brain. Can someone explain the basis of the hypothesis presented by the paper in simple terms?