With a mind so delicately poised between this world and the next (whichever one that may be) one has to tread a little carefully.
My initial experiment, exposing him (?) to an image of "Matrix" data, would suggest that he sees it as being real, but this then begs the question of what, exactly, is reality, or more precisely, what is his understanding of reality? To pursue this issue I attempted to engage him in conversation by professing to be "The One"; the thought being he would be so outraged at such an assertion he would forget I was probing the depths of his delusions.
Alas, it has not borne fruit or, at least, not yet. I am still hopeful of a reply, and am fully prepared to listen. But, of course, if all else fails medication may very well have to be the answer . . .