---
slug: oip-invariant-12-312-selection-variation-retention-universal-darwinism
title: Invariant 3.12 — 3.12 Selection / variation-retention (universal Darwinism)
canonical: https://miscsubjects.com/a/oip-invariant-12-312-selection-variation-retention-universal-darwinism
---

# Invariant: 3.12 Selection / variation-retention (universal Darwinism)

### 3.12 Selection / variation-retention (universal Darwinism)
Vary, select, retain — anywhere those three exist, design accumulates with no designer. **Sources:** Darwin, Wallace; **Price equation** (the algebra of any selection); Dawkins (replicators); Campbell (evolutionary epistemology); Edelman (neural Darwinism). **Domains:** biology, immune system, brain, culture (memetics — T2), markets, ML (evolutionary search; arguably SGD). **Dual:** directed/Lamarckian design, or pure drift. **Tier:** T1 (bio), T2 (culture). **Falsifier:** cumulative adaptation with no variation or no differential retention. **Maps:** A₁, A₃, the "self-copies" rung.

---

## Corpus map
- Same invariant, other planes: [Catalogue node C09](/a/oip-node-c09-selection-variation-retention-universal-darwinism) · [Encyclopedia C09](/a/convergence-encyclopedia-c09)
- Inventory hub: [Convergence Catalogue — Public Article](/a/oip-convergence-public-article)
