Afterword

The end. Time to celebrate.

The theories about Infinity in the final volume were fairly abstract and difficult to understand. Pure mathematics was tedious and hard to grasp, so it took me quite a long time to finish writing it.

When I first started this book, I never intended to touch upon the realm of Actual Infinity, so there are quite a few inconsistencies between the earlier and later parts.

The protagonist was originally conceived as a Fifth Order information-based lifeform. Ji Hong, Lin Li, and the others were likewise confined to a world of Potential Infinity.

Just as the book says, there was no practical physical means of crossing the unreachable boundary between the finite and the infinite.

Physically speaking, the only possible ways of reaching Infinity were black holes and singularities.

But singularities rested upon the existence of the spacetime continuum, which assumed a universe with a scale of at least Aleph-One.

Moreover, because of the continuity of spacetime, every living thing in such a universe—from ants to paramecia—would possess a vast scale of at least Aleph-One.

I did not think a group of Earthlings who found it difficult even to memorize a phone number could have such terrifying power hidden inside them.

So, while researching black holes in the fifth volume, I drew upon parts of the Holographic Principle and Loop Quantum Gravity, rejected singularities, and confined black holes to the discrete and finite.

Up to that point, I had only wanted to tell the story of ordinary people who could never reach Infinity, yet continued pursuing untouchable truth despite knowing that everything they did was futile.

The turning point was Achilles, the female lead. Without her, there would have been no final volume, Infinite Universe.

Her appearance, character setup, personality, and such were unimportant. It was