parents: My PKM Practice


  • Core Distinction
    • A definition answers “What is it?”
      • It sets clear boundaries for a concept.
      • Its goal is precision and identification.
    • A model answers “How does it work?”
      • It explains relationships between parts.
      • Its goal is to simplify complexity and create understanding.
      • It can be used to explain or predict something.
      • It usually connects to multiple definition note.
    • A principle answers “How to do something?”
      • Its goal is to guide decisions and behavior.
  • Their Nature
    • A definition is static.
      • It is a statement.
      • Example: A term’s dictionary entry.
    • A model is dynamic.
      • It is a system or a framework.
      • Example: A diagram showing how components interact.
    • A principle is prescriptive.
      • It is a rule.
      • Example: A personal motto like “Measure twice, cut once.”
  • How They Relate
    • Definitions are the building blocks.
    • Models organize definitions into a useful structure.
    • You need clear definitions before you can build a reliable model.
  • Examples
    • MDA is a model, it’s based on the definition of mechanics, dynamics and aesthetics.
    • Artifacts ≫ Opinions is a principle; it guides how I should write.