Catch-22 on the vus:
"Deja vu. The subtle, recurring confusion between illusion and
reality that was characteristic of paramnesia fascinated the chaplain,
and he knew a number of things about it. He knew, for example, that
it was called paramnesia, and he was interested as well in such
corollary optical phenomena as jamais vu, never seen, and presque vu,
There were terrifying, sudden moment when objects,
concepts and even people that the chaplain had lived with almost all
of his life inexplicably took on an unfamiliar and irregular aspect
that he had never seen before and which made them seem totally
strange: jamais vu.
And there were moments when he almost saw
absolute truth in brilliant flashes of clarity that almost came to
him: presque vu.
The episode of the naked man in the tree at Snowden's
funeral mystified him throughly. It was not deja vu, or at the time
he had experienced no sensation of ever having seen a naked man in a
tree at Snowden's funeral before. It was not jamais vu, since the
apparition was not of someone, or something, familiar appearing to him
in an unfamiliar guise. And it was certainly not presque vu, for the
chaplain did see him."
There was no mistaking the awesome implications of the chaplains revelation: it was either an insight of divine origin or a hallucination; he was either blessed or losing his mind. Both prospects filled him with equal fear and depression. It was neither déjà vu, presque vu nor jamais vu. It was possible that there were other vus of which he had never heard and that one of these other vus would explain succinctly the baffling phenomenon of which he had been both a witness and a part; it was even possible that none of what he thought had taken place, really had taken place, that he was dealing with an aberration of memory rather than of perception, that he never really had thought he had seen what he now thought he once did think he had seen, that his impression now that he once had thought so was merely the illusion of and illusion, and that he was only now imagining that he had ever once imagined seeing a naked man sitting in a tree at the cemetery.