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| | Karl Popper |
 | | As Lakatos has pointed out, Popper's theory of demarcation hinges quite fundamentally on the assumption that there are such things as critical tests, which either conclusively falsify a theory, or give it a strong measure of corroboration. |
 | | They are falsified, if at all, Lakatos argues, not by Popperian critical tests, but rather within the elaborate context of the research programmes associated with them gradually grinding to a halt, with the result that an ever-widening gap opens up between the facts to be explained, and the research programmes themselves. |
 | | Lakatos, I. ‘Falsification and the Methodology of Scientific Research Programmes’, in Lakatos, I and Musgrove, A. (eds). |
| plato.stanford.edu /entries/popper (8225 words) |
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