Concept Types
This reference defines the five concept types used in ebook analysis. Use these definitions to guide classification - they are guidance for judgment, not rigid rules.
The Five Types
Principle
Definition: A foundational truth, axiom, or universal claim about how things work.
Distinguishing Features:
- Asserts something IS true (not how to do something)
- Often stated as timeless or universal
- Serves as foundation for other concepts
- Usually abstract and broadly applicable
Language Signals:
- "X is essential for Y"
- "The fundamental truth is..."
- "At its core, X requires Y"
- Declarative statements about nature of things
Examples:
- "Communities form around shared identity" (community building)
- "Trust is earned through consistent action" (leadership)
- "Complex systems exhibit emergent behavior" (systems thinking)
Not Principles:
- Step-by-step processes (those are tactics)
- Frameworks with multiple components (those are patterns)
- Recommendations for action (those are strategies)
Mechanism
Definition: An explanation of HOW something works - the causal chain or process by which effects occur.
Distinguishing Features:
- Explains causation (A leads to B because...)
- Describes internal workings
- Can be observed or tested
- Shows the "gears" behind outcomes
Language Signals:
- "X works by..."
- "The way this happens is..."
- "When A occurs, B follows because..."
- "The underlying process involves..."
Examples:
- "Reciprocity creates social bonds by triggering obligation responses" (social dynamics)
- "Spaced repetition enhances memory by strengthening neural pathways during recall" (learning)
- "Network effects increase value as more users join because each new connection adds multiple potential relationships" (technology)
Not Mechanisms:
- Simple observations without explanation (those may be principles)
- How-to instructions (those are tactics)
- Descriptions of what something is (those may be patterns)
Pattern
Definition: A recurring structure, framework, or recognizable arrangement that appears across multiple instances.
Distinguishing Features:
- Describes a shape or structure
- Can be observed in multiple contexts
- Has named components or phases
- Provides a mental model or framework
Language Signals:
- "The X pattern involves..."
- "This follows a common structure of..."
- "The framework consists of..."
- "There are N stages/phases/components..."
Examples:
- "The hero's journey pattern: departure, initiation, return" (storytelling)
- "The community lifecycle: founding, growth, maturation, renewal" (communities)
- "The five stages of grief: denial, anger, bargaining, depression, acceptance" (psychology)
Not Patterns:
- Single actions or techniques (those are tactics)
- Explanations of why things work (those are mechanisms)
- Recommendations without structure (those are strategies)
Strategy
Definition: A high-level approach or orientation for achieving goals - the "how to think about" rather than "how to do."
Distinguishing Features:
- Provides direction without specifying exact steps
- Can be implemented in multiple ways
- Involves trade-offs and priorities
- Guides decision-making
Language Signals:
- "The approach should be..."
- "Focus on X before Y"
- "Prioritize..."
- "The key is to..."
- "Rather than X, consider Y"
Examples:
- "Build trust before asking for contribution" (community building)
- "Fail fast and iterate" (product development)
- "Invest in relationships during good times" (leadership)
Not Strategies:
- Specific techniques (those are tactics)
- Frameworks with defined components (those are patterns)
- Explanations of why things work (those are mechanisms)
Tactic
Definition: A specific, actionable technique or practice that can be directly implemented.
Distinguishing Features:
- Concrete and specific
- Can be done immediately
- Has clear success criteria
- Often includes tools, templates, or scripts
Language Signals:
- "Do X"
- "Send/Create/Write/Build..."
- "Use the following template..."
- "Every day, do..."
- Imperative verbs
Examples:
- "Send welcome emails within 24 hours of signup" (community building)
- "Use the STAR format for behavioral interviews" (hiring)
- "Write three things you're grateful for each morning" (wellbeing)
Not Tactics:
- General approaches (those are strategies)
- Explanations of why (those are mechanisms)
- Broad truths (those are principles)
Classification Decision Tree
When classifying a concept, ask:
Is it an actionable instruction?
- Yes → Probably TACTIC
- No → Continue
Does it explain HOW something causes an effect?
- Yes → Probably MECHANISM
- No → Continue
Does it describe a recurring structure or framework?
- Yes → Probably PATTERN
- No → Continue
Does it provide high-level guidance for achieving goals?
- Yes → Probably STRATEGY
- No → Continue
Does it assert a foundational truth about how things work?
- Yes → Probably PRINCIPLE
- No → Review - may need more context or may be too vague to extract
Boundary Cases
Principle vs Mechanism
- Principle: "Trust is essential for collaboration"
- Mechanism: "Trust enables collaboration by reducing transaction costs"
- The mechanism explains WHY the principle is true
Mechanism vs Pattern
- Mechanism: "Feedback loops amplify small changes"
- Pattern: "The growth-plateau-renewal cycle"
- Patterns describe structure; mechanisms explain causation
Strategy vs Tactic
- Strategy: "Prioritize quality over quantity"
- Tactic: "Review each post before publishing using this checklist"
- If you can do it in one sitting, it's probably a tactic
Pattern vs Principle
- Pattern: "The five stages of team development"
- Principle: "Teams require psychological safety to perform"
- Patterns have structure; principles are singular claims
When Classification is Unclear
If a concept doesn't clearly fit one type:
- Consider the author's apparent intent
- Look at surrounding context for clues
- Choose the type that best serves retrieval
- Note uncertainty in the concept record
- Flag for human review if needed
It's better to classify with noted uncertainty than to skip extraction of a valuable concept.