change in the Meta Model - the way that people tend to think about a system
A paradigm shift is a phrase that was popularized by American physicist Thomas Kuhn to describe the structure of Scientific Revolutions, or fundamental changes in the basic concepts and experimental practices of a scientific discipline. Kuhn contrasts these shifts to the activity of normal science, which he characterized as scientific work done within a prevailing framework (or paradigm). In this context, the word "paradigm" is used in its original meaning, as "example". http://en.wikipedia.org/wiki/Paradigm_shift
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