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juli 27, 2003
Systemdynamisk analys av Kuhns paradigmteori
Jason Wittenberg och John D Sterman gjorde 1999 en systemdynamisk analys av hur vetenskapliga teorier uppstår och försvinner, baserad på Kuhns paradigmteori.
Läs mer på Path Dependence, Competition, and Succession in the Dynamics of Scientific Revolution (PDF av hela dokumentet här).
Abstract: What is the relative importance of structural versus contextual forces in the birth and death of scientific theories? We describe a dynamic model of the birth, evolution, and death of scientific paradigms based on Kuhn's Structure of Scientific Revolutions. The model creates a simulated ecology of interacting paradigms in which the creation of new theories is stochastic and endogenous. The model captures the sociological dynamics of paradigms as they compete against one another for members. Puzzle solving and anomaly recognition are also endogenous. We specify various regression models to examine the role of intrinsic versus contextual factors in determining paradigm success. We find that situational factors attending the birth of a paradigm largely determine its probability of rising to dominance, while the intrinsic explanatory power of a paradigm is only weakly related to the likelihood of success. For those paradigms that do survive the emergence phase, greater explanatory power is significantly related to longevity. However, the relationship between a paradigm's `strength' and the duration of normal science is also contingent on the competitive environment during the emergence phase. Analysis of the model shows the dynamics of competition and succession among paradigms to be conditioned by many positive feedback loops. These self-reinforcing processes amplify intrinsically unobservable micro-level perturbations in the environment - the local conditions of science, society, and self faced by the creators of a new theory - until they reach macroscopic significance. Such dynamics are the hallmark of self-organizing evolutionary systems.
Koden för modellen finns att ladda ner, skriven i Dynamo. Tyvärr har jag inte Dynamo, och när jag försökte porta koden till Vensim gick det inte speciellt bra.
För mer om Kuhns och hans paradigmteori, se t.ex. google-kategorin Society, Philosophy, Philosophers, Kuhn, Thomas S.
Posted by hakank at juli 27, 2003 10:29 FM Posted to Dynamiska system | Filosofi