This article describes abductions as special patterns of inference to the best explanation whose structure determines a particularly promising abductive conjecture and thus serves as an abductive search strategy. A classification of different patterns of abduction is provided which intends to be as complete as possible. An important distinction is that between selective abductions, which choose an optimal candidate from given multitude of possible explanations, and creative abductions, which introduce new theoretical models or concepts. While selective abduction has dominated the (...) literature, creative abductions are rarely discussed, although they are essential in science. The article introduces several kinds of creative abductions, such as theoretical model abduction, common cause abduction and statistical factor analysis, and illustrates them by various real case examples. It is suggested to demarcate scientifically fruitful abductions from purely speculative abductions by the criterion of causal unification. (shrink)

Normative theories can be useful in developing descriptive theories, as when normative subjective expected utility theory is used to develop descriptive rational choice theory and behavioral game theory. “Ought” questions are also the essence of theories of moral reasoning, a domain of higher mental processing that could not survive without normative considerations.

In their 2010 book, Biology’s First Law, D. McShea and R. Brandon present a principle that they call ‘‘ZFEL,’’ the zero force evolutionary law. ZFEL says (roughly) that when there are no evolutionary forces acting on a population, the population’s complexity (i.e., how diverse its member organisms are) will increase. Here we develop criticisms of ZFEL and describe a different law of evolution; it says that diversity and complexity do not change when there are no evolutionary causes.

Kann die Entstehung neuer Ideen im Menschen und die daran anschließende Verbreitung dieser neuen Ideen durch die Anwendung eines Darwinistischen Evolutionsschemas erklärt werden? Der Prozess der Kreativität und der Veränderung wäre damit genauso wie die biologische Evolution im Sinne Darwins als ein sich ständig wiederholender, graduell kumulierender Prozess von Versuch und Irrtum zu verstehen. – Ist eine solche Erklärung möglich und könnte sie im Sinne einer allgemeinen Evolutionstheorie die Kluft zwischen Geistes-und Naturwissenschaften überbrücken helfen? Diese Fragen sollen Gegenstand einer systematischen, (...) philosophischen Analyse sein. (shrink)