Put plainly, I am not at liberty to divulge that information. There, it is said. Let us quickly move on from this unfortunate quantum of dissonance t… - Iain Banks

Anyway," she said. "I'm sorry."
"Indeed. I can see contrition oozing from your every pore.

Which was more likely: what appeared to be the case, or this all being a lie, a set-up, a vast and incomprehensible joke? Discuss.

He was not what he appeared to be.
He was beginning to wonder if he had ever been.
The ice inside the water planet did not exist; neither did the water planet itself, nor the star it orbited nor the galaxy beyond nor anything of what appeared to be real no matter how far out you might think you were looking. Nor how far in you looked, either. Peer into anything closely enough and you would find only the same graininess that the Real exhibited; the smallest units of measurement were the same in both realms, whether it was of time or extent or mass.
For some people, of course, this meant the Real itself was not really real, not in the sense of being genuinely the last un-simulated bedrock of actuality. According to this view everybody was already in a pre-existing simulation but simply unaware of it, and the faithful, accurate virtual worlds they were so proud of creating were just simulations within a simulation.
That way though, arguably, madness lay. Or a kind of lassitude through acceptance that could be exploited. There were few better ways of knocking the fight out of people than by convincing them that life was a joke, a contrivance under somebody else’s ultimate control, and nothing of what they thought or did really mattered.