Gerhard Schurz

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This article describes abductions as special patterns of inference to the best explanation whose structure determines a particularly promising abductive conjecture (conclusion) and thus serves as an abductive search strategy (Sect. 1). A classification of different patterns of abduction is provided which intends to be as complete as possible (Sect. 2). An(More)
) In Logic across the University: Foundations and Application–Proceedings of the Tsinghua Logic Conference, Beijing, ed. J. van Benthem and F. Liu, 47–54. Volume 47: Studies in Logic. London: College Publications. Levi, Isaac. 1967. Gambling with Truth: An Essay on Induction and the Aims of Science. Cambridge, MA: MIT Press.<lb>———. 1980. The Enterprise of(More)
In the first part I argue that normic laws are the phenomenological laws of evolutionary systems. If this is true, then intuitive human reasoning should be fit in reasoning from normic laws. In the second part I show that system P is a tool for reasoning with normic laws which satisfies two important evolutionary standards: it is probabilistically reliable,(More)
While ceteris paribus laws (CP-laws) have been frequently discussed by philosophers, it has not been sufficiently considered that distinct kinds of CP-laws exist in science with rather different meanings. We distinguish between (1.) comparative CP-laws and (2.) exclusive CP-laws. There exist also mixed CP-laws, which contain a comparative and an exclusive(More)
Hume’s famous is-ought thesis (cf. Hume, 1739/40, p. 469) saying that nothing about what ought (or ought not) to be the case can be deduced from what is (or is not) the case, was the object of a continuing philosophical debate, without leading to agreement (cf. Hudson, 1969). Since in the last decades exact systems of modal alethic and deontic logic have(More)