Genus-Differentia Definition
Updated 2026-08-15
INTRODUCTION
English translation pending.
CORE DEFINITION
The genus-differentia definition defines a concept by naming its genus, the higher class it belongs to, and its differentia, the feature distinguishing it from the other species of that genus. The textbook example is that a human is a rational animal, where animal is the genus and rational is the differentia. The model's claim is precise concepts: vague concepts produce vague thinking, and a clean definition is the foundation of clear thought.
SCAFFOLDING EFFECT
Reduce cognitive load
- Find the genus: place the concept in its nearest upper class first. - Extract the differentia: name what separates it from the other species of that genus. - Compose and test: write the definition and check that it excludes the neighbors it should.
Anchor fast decisions
A concept's boundary is set by two constraints working together: the genus fixes the neighborhood and the differentia draws the line inside it. Without the genus the definition floats, and without a sufficient differentia it swallows neighboring species, so the pair is what pins the concept to exactly its intended range.
MINIMUM ACTION
In progress 0/1Practice this model in one real situation:
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Source support: Explicit
- en.wikipedia.orghttps://en.wikipedia.org/wiki/Genus%E2%80%93differentia_definitionverified
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