paradigm-shift

This introductory essay by Ian Hacking reflects on the enduring significance and context of Thomas Kuhn's 'The Structure of Scientific Revolutions,' emphasizing its impact on the philosophy and history of science. It outlines Kuhn's concept of scientific revolutions as structured processes involving normal science, anomalies, crises, and paradigm shifts, and situates the book historically within the scientific and geopolitical climate of 1962. The essay also contrasts Kuhn's notion of scientific revolutions with earlier ideas, such as Kant's and the scientific revolutions of the seventeenth and nineteenth centuries, highlighting Kuhn's unique contribution to understanding scientific progress.

This chapter explores the nature of scientific discovery as a process intertwined with anomalies that challenge existing paradigms, using the discovery of oxygen and X-rays as key examples. It argues that discovery is not a singular event but an extended process involving recognition of anomaly and conceptual assimilation, often requiring a paradigm shift. The chapter emphasizes that discoveries become scientific facts only after they are integrated into a new or revised theoretical framework.

This chapter explores the role of crisis in scientific paradigms and the emergence of new scientific theories. Kuhn argues that paradigm shifts are both destructive and constructive, often triggered by persistent anomalies that existing theories cannot resolve, leading to professional insecurity and eventual invention of new theories. Using historical examples such as the Copernican revolution and Lavoisier's oxygen theory, the chapter illustrates how prolonged crises in normal science precede major theoretical changes.

This chapter explores the nature and necessity of scientific revolutions, defining them as non-cumulative episodes where an older paradigm is replaced by an incompatible new one. Kuhn draws a parallel between scientific and political revolutions, emphasizing that paradigm shifts involve community-wide persuasion rather than purely logical or empirical adjudication. He argues that cumulative scientific development is rare and that paradigm change is often necessitated by anomalies that existing paradigms cannot resolve.

This chapter explores how scientific revolutions entail fundamental changes in scientists' perception of the world, akin to shifts in gestalt vision, where familiar objects are seen differently due to new paradigms. It argues that scientific observation is paradigm-dependent, meaning that what scientists see and how they interpret data is shaped by their conceptual framework, and that paradigm shifts cause scientists to perceive previously unnoticed phenomena. Historical examples, such as Herschel's discovery of Uranus, illustrate how changes in scientific paradigms alter both perception and the classification of observed phenomena.

This chapter argues that scientific revolutions are largely invisible because authoritative sources like textbooks, popularizations, and philosophy of science systematically disguise their existence and significance. Textbooks, in particular, rewrite history to present science as a cumulative, linear progression, omitting the revolutionary shifts in paradigms that fundamentally change the questions scientists ask and the facts they consider relevant. This rewriting fosters a false sense of continuity and stability in scientific knowledge, obscuring the disruptive nature of scientific revolutions.

This chapter analyzes the process by which scientific revolutions resolve, focusing on how new paradigms replace old ones through the conversion of the scientific community. Kuhn critiques traditional views of verification and falsification, arguing that paradigm shifts involve complex competition between incommensurable worldviews rather than straightforward empirical testing. He emphasizes that the acceptance of a new paradigm depends on its comparative problem-solving ability and the scientific community's gradual shift in perspective, rather than definitive proof or neutral language.

This chapter primarily serves as a bibliographic and reference overview related to Thomas S. Kuhn's work on the philosophy and history of science. It lists key publications by Kuhn and secondary sources that discuss his ideas, including interviews and analyses of his concept of scientific revolutions and paradigm shifts. The chapter situates Kuhn's contributions within broader scholarly discourse and highlights the continuing relevance of his work in understanding scientific tradition and change.

This chapter provides a bibliographic and thematic overview of Thomas Kuhn's influential works and their intellectual context, particularly focusing on his ideas about scientific revolutions and paradigms. It contrasts Kuhn's approach with that of Karl Popper, highlighting the shift in philosophical influence from Popper's falsificationism to Kuhn's paradigm-based view among working scientists. The chapter also references key discussions and debates involving Kuhn, Lakatos, and Feyerabend, emphasizing the evolving discourse on the nature of scientific progress and measurement.

This chapter primarily consists of bibliographic references to key historical works on the development of astronomy, chemistry, and physics, highlighting the evolution of scientific thought from ancient to early modern periods. It emphasizes the documentation of scientific crises and paradigm shifts, such as those surrounding Lavoisier's work and the Copernican Revolution, illustrating the gradual recognition and resolution of foundational scientific problems.

Chapter VIII, 'The Response to Crisis,' explores how scientific communities react when anomalies accumulate that cannot be explained by the prevailing paradigm, leading to a crisis. It references historical and philosophical discussions on the tension between tradition and innovation in scientific research, illustrating how crises prompt shifts in scientific thought and sometimes revolutionary changes. The chapter draws on examples such as the speed of sound and Mercury’s perihelion to demonstrate the empirical challenges that trigger these responses.