---
title: "Digital Twin"
description: "A bespoke, dynamically evolving system of three parts: a physical object or system, a computational model of it, and — \"equally important\" — a communication channel connecting them, so that the pair is recursive (input to one alters the other)."
type: "glossary-term"
canonical_url: "https://antikythera.wiki/terms/digital-twin"
md_url: "https://antikythera.wiki/md/terms/digital-twin"
last_updated: "2026-09-06"
site: "Antikythera Wiki"
---

# Digital Twin

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

A bespoke, dynamically evolving system of three parts: a physical object or system, a computational model of it, and — "equally important" — a communication channel connecting them, so that the pair is recursive (input to one alters the other). The twin may capture an existing system's physics, stand in for a prototype, or itself be the prototype before anything is built. NASA coined the term in 2010 and retrofitted an origin in Apollo-era capsule replicas (Apollo 13's fifteen simulators). Maughan's interest is the scale-up — engines, assembly lines, Synth 3D's 1.5 billion buildings, a "digital twin for Germany," Earth-2 and Destination Earth — where twins promise "an unbreakable causal connection between simulator and simulated": foresee disturbances and automate the response. That promise is the sim-to-real gap's mirror image (the Walmart drone and the dog).

## Appears in

- [Infinity Mirror](https://antikythera.wiki/work/journal/infinitymirror) (2025-05-10)
- [For a General Theory of Simulations](https://antikythera.wiki/work/journal/theoryofsim) (2025-05-10)
- [After Alignment](https://antikythera.wiki/work/journal/afteralignment) (2025-05-10)

_Glossary generated 2026-09-06._