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Methodology

How we evaluate claims and rate confidence.


Evidence Standards

Every claim on this site follows these standards:

1. Peer-Reviewed Sources

We prioritize peer-reviewed research from established journals:

Tier Source Type Examples
1 Peer-reviewed journals Nature, Science, PNAS, PLoS Medicine
2 Academic preprints arXiv, bioRxiv, medRxiv
3 Secondary sources Wikipedia, news articles
4 Commentary Blog posts, social media

Rule: Claims need ≥2 Tier 1-2 sources for ★★★★+ rating.


2. Confidence Ratings

Rating Meaning Criteria
★★★★★ Established Multiple replications, peer-reviewed, mechanistically understood
★★★★☆ Strong Replicated, peer-reviewed, minor gaps
★★★☆☆ Promising Initial findings, awaiting replication
★★☆☆☆ Preliminary Single study, speculative mechanism
★☆☆☆☆ Speculative No direct evidence, theoretical only

3. Falsification Criteria

Every claim includes what would disprove it:

Example: Social Connection Reduces Mortality

Falsification criteria:

  • Large-scale RCT showing no mortality benefit from social interventions
  • Discovery that correlation is entirely explained by confounders
  • Evidence that effect is limited to specific populations

4. Counter-Evidence Tracking

We actively track evidence that contradicts our claims:

  • Counter-evidence is displayed alongside supporting evidence
  • Claims are downgraded when counter-evidence accumulates
  • We update immediately when new research emerges

The Knowledge Graph

Our claims are stored in a knowledge graph that tracks:

  • Nodes: Claims, Evidence, Mechanisms, Gaps, Researchers
  • Edges: SUPPORTS, CONTRADICTS, EXPLAINS, BLOCKS
  • Temporal: When beliefs changed and why

Explore the graph →


Correction Process

When errors are found:

  1. Immediate acknowledgment - We don't hide mistakes
  2. Confidence downgrade - Rating adjusted based on severity
  3. Changelog entry - All changes documented
  4. Source update - Primary sources re-verified

Report an error →


What We Don't Do

  • Cherry-pick - We include counter-evidence
  • Overstate - "Suggests" not "proves" for preliminary findings
  • Hide uncertainty - Gaps are prominently displayed
  • Ignore criticism - All feedback is considered

Philosophical Commitments

We are transparent about our assumptions:

  1. Empiricism - Evidence over intuition
  2. Falsifiability - Claims must be testable
  3. Humility - We could be wrong
  4. Integration - Multiple disciplines inform our view

"The first principle is that you must not fool yourself — and you are the easiest person to fool." — Feynman