What is paradigm revolution?

Paradigm revolution is a concept in personal epistemology: Sometimes a schema needs a complete replacement not just modification.

Example: You've been iterating on a productivity system for three years — adding tags, restructuring folders, tweaking templates. Each change makes it slightly better and slightly more complex. One day you realize the system assumes a project-based work model, but your actual work is relational and event-driven. No amount of folder restructuring will fix a category error. You need to scrap the taxonomy and rebuild from a different premise entirely.

This concept is part of Phase 16 (Schema Evolution) in the How to Think curriculum, which builds the epistemic infrastructure for schema evolution.