Etymological Fallacy
Insisting on a word's original meaning over its current one.
"Words move on. Sometimes for better."
What is Etymological Fallacy? Insisting on a word's original meaning over its current one. Definitional debates that crowd out actual decisions.
Debating what 'strategy' means in ancient Greek instead of using it to plan.
Definitional debates that crowd out actual decisions.
Drag yourself across Etymological Fallacy.
Real scene: Debating what 'strategy' means in ancient Greek instead of using it to plan. The pull below is the same one etymological fallacy exerts on the call. Find the position where you stop being able to defend yourself with logic.
In the room: Definitional debates that crowd out actual decisions.
Pick a reaction to Etymological Fallacy
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The full taxonomy entry
Every concept in the Atlas uses the same structure — so Etymological Fallacy can be compared, recombined, and cited like an element on a periodic table.
- Business
- Leadership
- Government
- Healthcare
- Education
- Sales
- Marketing
- AI
- Negotiation
- Media
- Public Policy
- Relationships
- Where in our org would Etymological Fallacy most often show up unnoticed?
- Which metric, ritual, or contract clause quietly rewards Etymological Fallacy?
- If we removed every payoff for Etymological Fallacy, what behavior would replace it?
- Who benefits when Etymological Fallacy persists — and who pays the cost?
- People defend the status quo using the language of etymological fallacy.
- Decisions cluster around the easiest narrative rather than the strongest evidence.
- New data changes the slide deck but not the decision.
- Anyone naming the pattern is treated as the problem.
Every Atlas entry is a node in a knowledge graph. See the related rail below to follow the connections.
See Etymological Fallacy through 3 lenses
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Which best describes Etymological Fallacy?
Worked example, counter-example & concept map
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When you encounter Etymological Fallacy, your prefrontal cortex has to do extra work to override the automatic response — and that override budget is finite.
Executive control, planning, impulse override, working memory, System 2. First thing to go offline under stress, fatigue, or low blood sugar. Why your 4pm decisions are worse than your 9am ones.
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Assuming the conclusion in the premise.
The conclusion is hidden inside the premise.
What's true of the parts is assumed true of the whole.
Because there's no sharp line, no distinction exists.
Quietly redefining a term mid-argument.
What's true of the whole is assumed true of the parts.
Send the card, not just the link
A pre-rendered social card with the title, eyebrow, and URL. Copy the link, post it anywhere, or download the SVG for slides.
More definitions to follow
Every term in the Atlas connects to a dozen others. Pick any of these and see where it takes you.
Researchers favor conclusions aligned with their school, team, or sponsor.
Systematic skew in model behavior across groups.
Employers screen by school name, rewarding admission rather than developed skill.
Brain network active during rest and mind-wandering — and during creative insight.
Greg McKeown's discipline of the disciplined pursuit of less but better.
Believing past random events influence future independent ones.
Training is a one-time cost. Inference is forever.
The trained model develops its own internal optimizer.
Standards untethered from shipping cause paralysis and avoidance.
Choose the option you'll regret least at 80.
The model achieves the goal as stated, not as intended.
New hires paid more than tenure; tenure responds rationally.