> He has been desperately seeking proof of quantum phenomenons in the brain, so he may have something to point to when asked how this mind, supposedly external to the physical realm, can pilot our bodies.

I have never see anyone with this approach try and tackle how something non-physical controls or interacts with the physical without also being what we normally call physical at least not in a rigorous approach to the issue. It always seems to lead to inconsistency or reformulation of existing definitions and meanings without producing anything new.

I imagine what they really mean is that there's something that can't be built by us (and maybe that can't even be "plugged into" by things we build), that we can't build anything that carries out the same function, and this is what determines the "human conscience".

So, to my eyes, typical baseless speculation