# Revising Beliefs Under Evidence

Source: https\://meridiancodex.com/inheritance/revising-beliefs-under-evidence

Author: Carsten Geiser

Work: The Meridian Codex; work version: 6.2

License: CC BY 4.0 — https\://creativecommons.org/licenses/by/4.0/

The dynamic revision discipline — moving belief when evidence warrants and holding it when it does not. The Range-position work itself, made operational.

Normative

*Foundation*

## The Work

The work is to move belief when evidence warrants the move and to hold belief when evidence does not. Both moves are active. Openness for its own sake and stubborn commitment to a prior position both abandon the discipline. What this category trains is the capacity to revise on evidence and to hold on evidence, with the same diagnostic in each direction: is this move earned by the evidence, or by something else?

[Read the architecture →](https://meridiancodex.com/inheritance/revising-beliefs-under-evidence/architecture)

## The Tools

**[Steelmanning](https://meridiancodex.com/inheritance/revising-beliefs-under-evidence/steelmanning).** The discipline of constructing the strongest version of the opposing position.

**[The Update Protocol](https://meridiancodex.com/inheritance/revising-beliefs-under-evidence/the-update-protocol).** The structured method for moving belief when disconfirmation arrives.

**[Double Crux](https://meridiancodex.com/inheritance/revising-beliefs-under-evidence/double-crux).** The cooperative disagreement practice for finding the belief both sides would need to update.

**[Chesterton's Fence](https://meridiancodex.com/inheritance/revising-beliefs-under-evidence/chestertons-fence).** The discipline of understanding why a structure exists before removing or replacing it.

**[Premortem / Murphyjitsu](https://meridiancodex.com/inheritance/revising-beliefs-under-evidence/murphyjitsu).** The planning practice that imagines failure in advance and revises the plan before reality does.

### Source metadata

```json
{
  "title": "Revising Beliefs Under Evidence",
  "description": "The dynamic revision discipline — moving belief when evidence warrants and holding it when it does not. The Range-position work itself, made operational.",
  "aiSummary": "Entry-point category page for Foundation → Revising Beliefs Under Evidence. Short framing of the category's work (training the capacity to revise on evidence and to hold on evidence); contributing tools listed for navigation (Steelmanning, The Update Protocol, Double Crux, Chesterton's Fence, Premortem / Murphyjitsu); quiet link to the Architecture page. The architectural reasoning — Range-vantage articulation, the static/dynamic pair with Calibrating Confidence to Evidence, the Steelmanning cross-discipline cross-reference to Bond → Receiving Disagreement Well, and the chapter-relationship note — lives at /inheritance/revising-beliefs-under-evidence/architecture.",
  "discipline": "foundation",
  "category": "revising-beliefs-under-evidence",
  "status": "working-draft-v0-1"
}
```