Classification and Typing
Create explicit categories for organizing knowledge.
Classification is how you carve reality into categories
Every category you create determines what you group together and what you separate.
Categories are constructed not discovered
There is no single correct way to categorize — categories serve purposes.
Explicit categories beat implicit categories
When you name and define your categories you can evaluate and improve them.
Binary categories lose information
Dividing things into only two groups forces a false simplicity.
Spectrum thinking preserves nuance
Many things are better understood as positions on a continuum than as discrete categories.
Taxonomies are hierarchical categories
Nested categories with parent-child relationships create powerful organizational structures.
Mutually exclusive and collectively exhaustive
The best category systems have no overlaps and no gaps.
Typing adds constraints that prevent errors
Assigning types to objects restricts what operations make sense on them.
Status types track lifecycle
Objects often move through defined states — tracking these states enables workflow.
Priority types enable triage
Classifying items by importance or urgency enables systematic decision-making.
Role types clarify relationships
Defining roles for people and objects clarifies what each is responsible for.
Classification debt accumulates
Lazy or inconsistent categorization creates a growing mess that eventually must be cleaned up.
Reclassification is not failure
Changing how you categorize things is a sign of learning not inconsistency.
The cost of miscategorization
Putting something in the wrong category means the wrong actions get applied to it.
Classification reveals what you value
How you sort things shows what dimensions matter to you.
Prototype-based categories
Many real categories are organized around a central example rather than strict rules.
Boundary cases test your categories
Items that do not fit neatly into any category expose weaknesses in your system.
Cross-cutting categories
Sometimes you need to classify the same items along multiple independent dimensions.
Classification is a compression technique
Categories reduce complexity by treating similar things as equivalent for a given purpose.
Good classification systems evolve
The best category systems adapt as you learn more about what you are organizing.