This paper was presented at the 9th International Congress of Logic, Methodology and Philosophy of Science (Section 15: “Social Sciences”) held in Uppsala (Sweden) from August 7 to 14, 1991. Financial support coming from the Social Sciences and Humanities Research Council of Canada is hereby acknowledged. It was published in Methodus Vol.4, No.1 (June 1992), pp[removed]An earlier

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• Philosophy of science
• Epistemology
• Analytic philosophy
• Science studies
• Karl Popper
• Falsifiability
• Verisimilitude
• Essays in Positive Economics
• Milton Friedman
• Science
• Philosophy
• Knowledge