Hitchens's Razor is what can be asserted without evidence can be dismissed without evidence. It sits in the Cognition dimension (COG) of the Human Behavior Taxonomy™ as element HBT-COG-0367, within the Reasoning family. The core principle: what can be asserted without evidence can be dismissed without evidence. In incentive terms, it matters because it changes the payoff people perceive before they choose — which means it can be designed for, or exploited.
Scientific Definition
What can be asserted without evidence can be dismissed without evidence.
Plain-English Definition
What can be asserted without evidence can be dismissed without evidence.
Feynman Explanation
Make a claim, bring the proof. Otherwise, sit down.
Core Principle
What can be asserted without evidence can be dismissed without evidence.
Mechanisms
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What can be asserted without evidence can be dismissed without evidence.
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Strong claims require strong evidence.
Inputs (Triggers)
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Outputs (Behaviors)
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Behavioral Signature
Make a claim, bring the proof. Otherwise, sit down.
Examples
- A bold market claim is rejected until supporting data is shown.
- Strong claims require strong evidence.
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Original analysis from The Incentives Lab — how this element behaves inside real payoff structures.
Why this element matters to incentive design
Most organizations meet this element as a personnel problem. It is not one. The mechanism underneath it is straightforward: what can be asserted without evidence can be dismissed without evidence. You can recognize it in the field by its signature: make a claim, bring the proof. Otherwise, sit down. Every element in the Cognition dimension changes the perceived payoff of an action before the action happens, which is exactly where incentive design has leverage.
How it gets exploited
Left undesigned, strong claims require strong evidence. It is amplified whenever strong claims require strong evidence. Inside organizations that shows up as strong claims require strong evidence. The pattern is the same one Goodhart's Law describes: the measurable proxy attracts the effort, and the purpose behind it quietly loses funding.
How the Lab designs around it
The redesign move is to ask for evidence before engaging with extraordinary claims. Measure the behavior, not the sentiment. A survey will tell you how people feel about this; only observed action tells you whether it changed.
Famous Experiments
Pending editorial review.
Design Principles
- Ask for evidence before engaging with extraordinary claims.
Measurement Approaches
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Evidence
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The Perverse Incentive Lens™
How this behavior is exploited — and how to redesign around it.
- Ask for evidence before engaging with extraordinary claims.
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Pending editorial review.
Interactive Mini Network
Click any neighbor to re-center the graph and follow the threads of connection.
Knowledge Graph Neighbors
Auto-linked to the rest of the Human Behavior Taxonomy by family, domain, dimension, and shared keywords.
What cannot be settled by experiment is not worth debating.
Prefer the simplest explanation consistent with the evidence.
Deriving general rules from specific examples; the leap from instance to concept.
The brain evolved to reason adaptively, not always truthfully, to reduce the cost of errors.
We solve problems by adding, even when subtracting would be better.
Assuming that if one option is true, another must be false, when both can be true.
Presuming a purposeful actor behind events that may have no actor at all.
A finite set of well-defined instructions for solving a problem or performing a computation.
Every model simplifies reality; some are still useful.
Researchers favor conclusions aligned with their school, team, or sponsor.
Using personal stories or isolated examples instead of evidence.
Claiming something is true or better because most people believe it.
Where Hitchens's Razor is cited in the corpus
Essays, field guides, and diagnostics from The Incentives Lab that apply this element.
- EssayGoodhart's Law in the Real World
How measurable proxies capture judgment.
- EssayThe Perverse Incentives Hiding in Your KPIs
Cognitive shortcuts turned into scorecards.
- EssayAI Agents Inherit Your Incentives
How this element propagates into automated systems.
- CourseIncentives 101
The free ten-part primer on reading a payoff structure.
- ReferenceThe incentive glossary
Definitions for every mental model, bias, and fallacy in the corpus.
- ReferenceThe Periodic Table of Human Behavior
The full 1,267-element map this page belongs to.
Questions about Hitchens's Razor
- What is Hitchens's Razor?
- Hitchens's Razor is what can be asserted without evidence can be dismissed without evidence. It sits in the Cognition dimension (COG) of the Human Behavior Taxonomy™ as element HBT-COG-0367, within the Reasoning family. The core principle: what can be asserted without evidence can be dismissed without evidence. In incentive terms, it matters because it changes the payoff people perceive before they choose — which means it can be designed for, or exploited.
- What is an example of Hitchens's Razor?
- Strong claims require strong evidence. The Incentives Lab catalogs everyday, organizational, and historical instances of this element on its Human Behavior Taxonomy™ page (HBT-COG-0367).
- How is Hitchens's Razor exploited?
- Strong claims require strong evidence.
- How do you design around Hitchens's Razor?
- Ask for evidence before engaging with extraordinary claims.
- Which behavioral dimension does Hitchens's Razor belong to?
- Hitchens's Razor is classified in the Cognition dimension (COG) of the Human Behavior Taxonomy™, family "Reasoning", class "Mental Model". Its permanent identifier is HBT-COG-0367 and its evidence grade is B.