The Mathematical Olympiad textbook itself did not bear much significance, but the premonition attaching to it did. During the initial exploration of the Dreamland, Roland had discovered that the books that he had never read were all blank, and this theory applied to both the books on bookstands and those in the library. Most books were nothing but blank sheets topped with a cover. He even speculated that those book covers were productions of some thin threads of his memories fading into oblivion. If he had never seen a book, it would never exist in the dream world.
But the Mathematical Olympiad textbook on Zero's desk debunked his theory.
He wondered why he had not noticed the peculiarity at the beginning. Had he overlooked it during the exploration in the first two or three months, or it was actually a change that occurred later?
If it was the latter, he had to probe into it.
