Costs (Fixed vs. Variable) is fixed costs don't scale with output; variable costs do. It sits in the Cognition dimension (COG) of the Human Behavior Taxonomy™ as element HBT-COG-0196, within the Economics family. The core principle: fixed costs don't scale with output; variable costs do. 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
Fixed costs don't scale with output; variable costs do.
Plain-English Definition
Fixed costs don't scale with output; variable costs do.
Feynman Explanation
Operating leverage is fixed costs in disguise.
Core Principle
Fixed costs don't scale with output; variable costs do.
Mechanisms
Pending editorial review.
Fixed costs don't scale with output; variable costs do.
Pending editorial review.
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Cost structure determines strategy more than strategy determines cost.
Inputs (Triggers)
Pending editorial review.
Outputs (Behaviors)
Pending editorial review.
Behavioral Signature
Operating leverage is fixed costs in disguise.
Examples
- Software has high fixed, low variable cost — hence high gross margin at scale.
- Cost structure determines strategy more than strategy determines cost.
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 element is common enough to feel like human nature and specific enough to be engineered around. The mechanism underneath it is straightforward: fixed costs don't scale with output; variable costs do. You can recognize it in the field by its signature: operating leverage is fixed costs in disguise. 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, cost structure determines strategy more than strategy determines cost. It is amplified whenever cost structure determines strategy more than strategy determines cost. Inside organizations that shows up as cost structure determines strategy more than strategy determines cost. 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 map every line as fixed vs. variable. Re-architect deliberately. Design against it the way you would design against a known failure mode — assume it will appear, and price the exploit before someone finds it.
Famous Experiments
Pending editorial review.
Design Principles
- Map every line as fixed vs. variable. Re-architect deliberately.
Measurement Approaches
Pending editorial review.
Evidence
Pending editorial review.
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The Perverse Incentive Lens™
How this behavior is exploited — and how to redesign around it.
- Map every line as fixed vs. variable. Re-architect deliberately.
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.
What does it cost to leave?
Exploiting price differences between markets for risk-free profit.
The study of how real humans actually decide — bounded, social, emotional, and inconsistent.
With clear property rights and low transaction costs, parties negotiate to efficient outcomes.
Specialize in what you give up the least to do.
Complements raise each other's value; substitutes lower it.
Innovation destroys old industries and creates new ones.
Each additional unit produces less marginal benefit.
A long-run planner self in conflict with a short-run impulsive self.
Owning something raises its valuation — sellers want more to give it up than buyers will pay to acquire.
Bad money drives out good when both are legally equivalent.
The mythical fully rational, self-interested, utility-maximizing agent neoclassical models assume.
Where Costs (Fixed vs. Variable) 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 Periodic Table of Human Behavior
The full 1,267-element map this page belongs to.
Questions about Costs (Fixed vs. Variable)
- What is Costs (Fixed vs. Variable)?
- Costs (Fixed vs. Variable) is fixed costs don't scale with output; variable costs do. It sits in the Cognition dimension (COG) of the Human Behavior Taxonomy™ as element HBT-COG-0196, within the Economics family. The core principle: fixed costs don't scale with output; variable costs do. 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 Costs (Fixed vs. Variable)?
- Cost structure determines strategy more than strategy determines cost. The Incentives Lab catalogs everyday, organizational, and historical instances of this element on its Human Behavior Taxonomy™ page (HBT-COG-0196).
- How is Costs (Fixed vs. Variable) exploited?
- Cost structure determines strategy more than strategy determines cost.
- How do you design around Costs (Fixed vs. Variable)?
- Map every line as fixed vs. variable. Re-architect deliberately.
- Which behavioral dimension does Costs (Fixed vs. Variable) belong to?
- Costs (Fixed vs. Variable) is classified in the Cognition dimension (COG) of the Human Behavior Taxonomy™, family "Economics", class "Mental Model". Its permanent identifier is HBT-COG-0196 and its evidence grade is B.