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The Structure of Scientific Revolutions

Why this mattered

Kuhn’s essay and the book it discussed mattered because they gave historians, philosophers, and working scientists a new vocabulary for understanding scientific change. Against the older picture of science as a largely cumulative accumulation of facts, Kuhn described periods of “normal science” organized around shared exemplars, methods, and standards, punctuated by crises in which persistent anomalies could make a reigning framework unstable. The crucial shift was not simply that theories are replaced, but that standards of explanation, legitimate problems, and even what counts as evidence can change with them.

After Kuhn, it became newly possible to analyze scientific breakthroughs as changes in conceptual worlds rather than only as improvements in measurement or logic. Episodes such as the Copernican revolution, Lavoisier’s chemical revolution, Darwinian evolution, relativity, and quantum mechanics could be compared as transformations in research practice: each reorganized what scientists looked for, what they ignored, and which questions became tractable. This helped make “paradigm,” “normal science,” “anomaly,” and “incommensurability” part of the language used to discuss discovery, not only in physics but across biology, medicine, social science, and technology.

Its influence also shaped how later breakthroughs were narrated and assessed. Molecular biology, plate tectonics, chaos theory, and genomics were often understood through Kuhn’s framework as cases where new instruments, models, or organizing concepts reclassified old problems and opened new research programs. The paper’s lasting importance is therefore not that it supplied a universal law of scientific progress, but that it made the structure of intellectual change itself an object of analysis, showing that major discoveries alter the communities, standards, and questions through which future discoveries become possible.

Abstract

A good book may have the power to change the way we see the world, but a great book actually becomes part of our daily consciousness, pervading our thinking to the point that we take it for granted, and we forget how provocative and challenging its ideas once were-and still are. The Structure of Scientific Revolutions is that kind of book. When it was first published in 1962, it was a landmark event in the history and philosophy of science. And fifty years later, it still has many lessons to teach. With The Structure of Scientific Revolutions, Kuhn challenged long-standing linear notions of scientific progress, arguing that transformative ideas don't arise from the day-to-day, gradual process of experimentation and data accumulation, but that revolutions in those breakthrough moments that disrupt accepted thinking and offer unanticipated ideas, occur outside of normal science, as he called it. Though Kuhn was writing when physics ruled the sciences, his ideas on how scientific revolutions bring order to the anomalies that amass over time in research experiments are still instructive in our biotech age. This new edition of Kuhn's essential work in the history of science includes an insightful introductory essay by Ian Hacking that clarifies terms popularized by Kuhn, including paradigm and incommensurability, and applies Kuhn's ideas to the science of today. Usefully keyed to the separate sections of the book, Hacking's essay provides important background information as well as a contemporary context. Newly designed, with an expanded index, this edition will be eagerly welcomed by the next generation of readers seeking to understand the history of our perspectives on science.

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