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The Structure of Scientific Revolutions
Human Flourishing

The Structure of Scientific Revolutions

Thomas S. Kuhn 1962 12 references

Kuhn's framework for how science develops through paradigm-governed normal science, crisis, and revolutionary paradigm shifts — not cumulative accumulation.

philosophy-of-science paradigm-shifts scientific-progress epistemology history-of-science incommensurability

Overview

The Core Framework

  • Science alternates between normal science (puzzle-solving within an accepted paradigm) and revolutions (non-cumulative paradigm replacements)
  • The cycle: Normal Science -> Anomaly -> Crisis -> Revolution -> New Normal Science
  • Paradigms guide research through tacit knowledge and shared exemplars, not explicit rules
  • Competing paradigms are incommensurable — they cannot be fully translated into each other's terms
  • Scientific progress is real but non-teleological: evolution from what came before, not toward fixed truth

Quick Lookup

Situation Key Concept Avoid This
Identifying how a field operates day-to-day Normal science as puzzle-solving (Ch. III-IV) Assuming all research is revolutionary
Understanding why scientists resist new theories Paradigm commitment enables precision (Ch. V) Dismissing resistance as mere stubbornness
Explaining why a field is in turmoil Crisis from persistent anomalies (Ch. VII-VIII) Treating every disagreement as a crisis
Analyzing a major theoretical shift Revolution replaces the entire framework (Ch. IX) Treating it as cumulative addition
Comparing pre/post-revolution science Incommensurability across paradigms (Ch. IX-X) Assuming neutral translation is possible
Understanding why history looks cumulative Textbooks rewrite history after revolutions (Ch. XI) Taking textbook narratives at face value
Evaluating scientific progress Puzzle-solving capacity, not truth-proximity (Ch. XIII) Assuming science converges on fixed truth

The Key Insight

"Normal science, the activity in which most scientists inevitably spend almost all their time, is predicated on the assumption that the scientific community knows what the world is like. Much of the success of the enterprise derives from the community's willingness to defend that assumption, if necessary at considerable cost." — Thomas S. Kuhn, Chapter I

References