Is-Ought Gap is you can't derive an 'ought' (value claim) from an 'is' (factual claim) without a smuggled premise. It sits in the Cognition dimension (COG) of the Human Behavior Taxonomy™ as element HBT-COG-0414, within the Logic family. The core principle: you can't derive an 'ought' (value claim) from an 'is' (factual claim) without a smuggled premise. 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
You can't derive an 'ought' (value claim) from an 'is' (factual claim) without a smuggled premise.
Plain-English Definition
You can't derive an 'ought' (value claim) from an 'is' (factual claim) without a smuggled premise.
Feynman Explanation
Data doesn't tell you what to do. It tells you the terrain. You bring the destination.
Core Principle
You can't derive an 'ought' (value claim) from an 'is' (factual claim) without a smuggled premise.
Mechanisms
Pending editorial review.
You can't derive an 'ought' (value claim) from an 'is' (factual claim) without a smuggled premise.
Pending editorial review.
Pending editorial review.
Pending editorial review.
Pending editorial review.
Most 'data-driven' decisions hide a value judgment that nobody made explicit.
Inputs (Triggers)
Pending editorial review.
Outputs (Behaviors)
Pending editorial review.
Behavioral Signature
Data doesn't tell you what to do. It tells you the terrain. You bring the destination.
Examples
- David Hume's distinction, 1739; central to The Philosopher's Toolkit's ethics section.
- Most 'data-driven' decisions hide a value judgment that nobody made explicit.
Pending editorial review.
Original analysis from The Incentives Lab — how this element behaves inside real payoff structures.
Why this element matters to incentive design
This is one of the elements leaders describe as a values gap. It is a payoff gap. The mechanism underneath it is straightforward: you can't derive an 'ought' (value claim) from an 'is' (factual claim) without a smuggled premise. You can recognize it in the field by its signature: data doesn't tell you what to do. It tells you the terrain. You bring the destination. 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, most 'data-driven' decisions hide a value judgment that nobody made explicit. It is amplified whenever most 'data-driven' decisions hide a value judgment that nobody made explicit. Inside organizations that shows up as most 'data-driven' decisions hide a value judgment that nobody made explicit. 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 name the values being optimized for. Then debate them, separately from the data. The leverage is not in explaining the behavior to people. It is in changing what the behavior earns.
Famous Experiments
Pending editorial review.
Design Principles
- Name the values being optimized for. Then debate them, separately from the data.
Measurement Approaches
Pending editorial review.
Evidence
Pending editorial review.
Pending editorial review.
The Perverse Incentive Lens™
How this behavior is exploited — and how to redesign around it.
- Name the values being optimized for. Then debate them, separately from the data.
Pending editorial review.
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.
Whoever makes the positive claim carries the obligation to support it. Absence of disproof isn't proof.
Treating one kind of thing as if it belonged to a different ontological category.
Justified true belief isn't always knowledge — luck can produce true beliefs from defective reasoning.
If P then Q. P. Therefore Q. The most basic valid inference move in formal logic.
If P then Q. Not Q. Therefore not P. The logic behind every falsification test.
Necessary = required for X. Sufficient = enough on its own for X. Conflating them is a common error.
Assume the opposite of what you want to prove. Derive a contradiction. The opposite must be false.
How will I feel about this in 10 minutes / 10 months / 10 years?
Basics first (health/finances), then depth (mastery/impact), then altruism (widening circle).
A group decides on a course of action that nobody actually wants, because everyone assumes others prefer it.
Inattention or forgetfulness caused by low attention, hyperfocus, or distraction.
Deriving general rules from specific examples; the leap from instance to concept.
Where Is-Ought Gap 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.
- ReferenceThe Periodic Table of Human Behavior
The full 1,267-element map this page belongs to.
- ReferenceThe incentive glossary
Definitions for every mental model, bias, and fallacy in the corpus.
Questions about Is-Ought Gap
- What is Is-Ought Gap?
- Is-Ought Gap is you can't derive an 'ought' (value claim) from an 'is' (factual claim) without a smuggled premise. It sits in the Cognition dimension (COG) of the Human Behavior Taxonomy™ as element HBT-COG-0414, within the Logic family. The core principle: you can't derive an 'ought' (value claim) from an 'is' (factual claim) without a smuggled premise. 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 Is-Ought Gap?
- Most 'data-driven' decisions hide a value judgment that nobody made explicit. The Incentives Lab catalogs everyday, organizational, and historical instances of this element on its Human Behavior Taxonomy™ page (HBT-COG-0414).
- How is Is-Ought Gap exploited?
- Most 'data-driven' decisions hide a value judgment that nobody made explicit.
- How do you design around Is-Ought Gap?
- Name the values being optimized for. Then debate them, separately from the data.
- Which behavioral dimension does Is-Ought Gap belong to?
- Is-Ought Gap is classified in the Cognition dimension (COG) of the Human Behavior Taxonomy™, family "Logic", class "Mental Model". Its permanent identifier is HBT-COG-0414 and its evidence grade is B.