---
title: "Biospheric Reproduction"
description: "Walker's closing conjecture in Recursive Worlds."
type: "glossary-term"
canonical_url: "https://antikythera.wiki/terms/biospheric-reproduction"
md_url: "https://antikythera.wiki/md/terms/biospheric-reproduction"
last_updated: "2026-09-06"
site: "Antikythera Wiki"
---

# Biospheric Reproduction

> A working definition written for this wiki from the reading notes; not Antikythera's own wording. From Antikythera Wiki (https://antikythera.wiki/terms/biospheric-reproduction), an independent guide to Antikythera's published work.

Walker's closing conjecture in Recursive Worlds. Life on her account is copying at successively larger scales (cells, near-identical humans, many instances of one technology), so a technosphere that is genuinely a living structure should eventually copy the biosphere that produced it. The claim turns origin-of-life research from history into engineering: a planet whose technologies of perception can resolve how matter first crossed into life would hold the recipe for repeating that transition elsewhere. It follows from assembly theory's copy-number criterion, and Agüera y Arcas reports the consequence Walker draws: Earth, existing once, is not alive until it reproduces. There the two part, since his Dynamic Stability requires homeostasis rather than reproduction, so a Gaia-like singleton already counts as living. Likavčan's Substrate-Agnostic Ecology offers a nearer-term variant: the technosphere as armature for the "assisted reproduction" of organisms and metabolisms within one biosphere, short of copying worlds.

## Appears in

- [Planetary Sapience Symposium](https://antikythera.wiki/work/journal/planetarysapience) (2025-11-21)
- [The Long L](https://antikythera.wiki/work/journal/longl) (2025-11-21)
- [What Is Intelligence?](https://antikythera.wiki/work/book/what-is-intelligence) (2025-09-23)
- [Recursive Worlds](https://antikythera.wiki/work/journal/recursiveworlds) (2025-05-10)

_Glossary generated 2026-09-06._