According to a view going back to Plato, the aim of philosophy is to acquire knowledge and there is a method to acquire knowledge, namely a method of discovery. In the last century, however, this view has been completely abandoned, the attempt to give a rational account of discovery has been given up, and logic has been disconnected from discovery. This paper outlines a way of reconnecting logic with discovery.

This paper reports a psychological study of human categorization that looked at the procedures used by expert scientists when dealing with puzzling items. Five professional botanists were asked to specify a category from a set of positive and negative instances. The target category in the study was defined by a feature that was unusual, hence situations of uncertainty and puzzlement were generated. Subjects were asked to think aloud while solving the tasks, and their verbal reports were analyzed. A number of (...) problem solving strategies were identified, and subsequently integrated in a model of knowledge‐guided inductive categorization. Our model proposes that expert knowledge influences the subjects' reasoning in more complex ways than suggested by earlier investigations of scientific reasoning. As in previous studies, domain knowledge influenced our subjects' hypothesis generation and testing; but, additionally, it played a central role when subjects revised their hypotheses. (shrink)

Es wird ausgegangen von den in den empirischen Wissenschaften vorkommenden Satzarten. Die Abhängigkeit der Kennzeichnungen "vollständig" bzw. "hinreichend verifiziert" von den Kriterien der benützten Überprüfungsverfahren wird untersucht. Die irrigen Voraussetzungen extremer Verallgemeinerungen, wie der "Verifikations-these" Wittgensteins und der "asymmetrischen Falsifikationstheorie" Poppers, werden aufgezeigt. Die methodologische Symmetrie von Verifikation und Falsifikation wird durch den Hinweis auf die gleicherweise unerläßliche Bedeutung der induktiven Schritte und des kontrollierenden Aufsuchens von Unverträglichkeiten für den wissenschaftlichen Fortschritt begründet. Unter Berücksichtigung dieser Kriterien werden empirische Allsätze als (...) die Beschreibung der realen Ordnung empirischer Phänomene gedeutet. (shrink)

A set of six publications have introduced, commented, criticized and defended Amir Alexander’s book on infinitesimals published in 2014. The aim of the following article is to bring the various arguments together.

This thesis attempts to justify a normative role for methodology by sketching a pragmatic way out of the dichotomy between two major strands in economic methodology: empiricism and postmodernism. I discuss several methodological approaches and assess their aptness for theory appraisal in economics. I begin with the most common views on methodology and argue why they are each ill-suited for giving methodological prescriptions to economics. Then, I consider positions that avoid the errors of empiricism and postmodernism. I specifically examine why (...) the two major strands of methodological criticism fail to give helpful methodological advice to economists and sketch out a pragmatic approach that can do this. (shrink)