The curt look intensifies into one of weary disgust. Excellent. He's reasonably certain of his own hypothesis, and he'll posit it as fact until there's evidence to the contrary. His subconscious lacks fears rooted in something so absurd as giants.

"This," Rush growls, waving a demonstrative hand at the mammoth trees, speaking with deliberate slowness, "is not real. Do you understand that? It's a subconsciously-manifested environment. It's a dream."