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|Authors List=Hakob Barseghyan,
|Formulated Year=2015
|Prehistory=The prehistory concerning synchronism versus asynchronism of method employment is rooted in a debate between Thomas Kuhn and Larry Laudan, in which the former promoted synchronism and the latter asynchronism. For Kuhn, science changes in phases, the first of which is normal science.<ref>Anderson and Hepburn. Scientific Change. Internet Encyclopedia of Philosophy. Stable URL: http://www.iep.utm.edu/s-change/. </ref> Normal science is marked by a consensus on the aspects of science that constitute a paradigm: concepts used in communication, the meaningfulness and relevance of some problems to research, and model solutions to research problems. Kuhn’s later formulation of a paradigm, a disciplinary matrix, includes laws, beliefs about the existence of objects/phenomena, values concerning research evaluation, and exemplary problems. Normal science is further characterized by an expectation that solutions will agree with problems previously researched. However, sometimes anomalies emerge with which this agreement does not obtain. When anomalies are serious they can put pressure on the reigning paradigm.
Serious anomalies eventually give way to a crisis in the paradigm, which calls for the modification or a revolutionary abandonment of the paradigm. Anomalies that strike at the foundation of the paradigm are often solved by new theories which, if accepted, culminate in a new consensus within the scientific community. This is known as a revolution. The new consensus among the community is not a cumulative progression from the old consensus; rather, the two paradigms are incommensurable with respect to the set of problems, the approaches to those problems, conceptual changes, and the world of the community’s research.
Kuhn’s notion of incommensurability first tabled the discussion of the synchronism or asynchronism of method employment. According to Thomas Nickles (2017), the incommensurability of Kuhnian revolutions involves a wholesale change in goals as well as methodological standards and values.<ref>Nickles, Thomas, "Scientific Revolutions", The Stanford Encyclopedia of Philosophy (Winter 2017 Edition), Edward N. Zalta (ed.), URL = <https://plato.stanford.edu/archives/win2017/entries/scientific-revolutions/></ref> Thus, in Kuhn’s system method employment necessarily depends upon theory acceptance, from which it follows that methods and theories change synchronously.<ref>Barseghyan, Hakob. (2015) The Laws of Scientific Change. Springer, pg. 151.</ref>

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