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Hempel is sympathetic to the positivist attempts at defining cognitive significance in terms of experiential implications, but has doubts about the definability of the. by Carl G. Hempel. 1. Introduction rion of cognitive meaning, or of cognitive significance, many and of the empiricist meaning criterion provide no more. that the general intent of the empiricist criterion of meaning is basically sound, hempel mainly the second of the two distinctions ; in regard to the first,. I shall have to (A) If under a given criterion of cognitive significance, a sen tence N is.

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Carl Gustav Hempel (1905—1997)

E is a reflexive, symmetric and transitive relation. The overarching theme of his work was the conception of explanation by subsumption, where specific events are subsumed by corresponding laws of physics, of chemistry, of biology, and so forth.

He claimed none of the notions can be understood without the other, creating a circular relation xriteria them. Studies in Science, Explanation, and RationalityOxford: He also considered sentences of more complex logical structures, but nothing hinges upon their use that cannot be addressed relative to an example of the simplest possible kind.

Related Entries abduction Carnap, Rudolf conditionals confirmation creationism dispositions essential vs. Consider the observation of a glass full of clear liquid. So, a meaning postulate can be false as well; hence, it is not conventional and thus it does hemlel define the meaning of a concept but it is a genuine physical hypothesis. Hempel implemented the conception of subsumption by presuming that explanations explain the occurrence of singular events by deriving their descriptions from premises that include at least one lawlike sentence, which thereby displays what he called their nomic expectability.

They concern entities that are non-observable.

These differences, however, require no further study here, for the purpose of the preceding discussion was simply to point out the role of general laws critwria scientific explanation, prediction, and postdiction Hempel In cases of this kind, he conceded, inter-substitutability, synonymy, and analyticity are related in an unproblematic way. The conception of explanation by subsumption is rather ancient in its lineage, but Hempel advanced explicit formulations that drew distinctions between explanations of different kinds, especially those that invoke universal or deterministic laws, statistical or probabilistic laws, and the explanation of laws by means of theories.


Language, Truth and Logic ; 2 nd edition,authored by A.

This implied that events with low probability could not be explained. Laissez Faire and Little Englanderism: According to Hempel, in such kind of explanation the explanans give only a high degree of probability to the explanandumwhich is not a logical consequence of the premises.

jempel Hempel raises two objections to this theory. His paradox of the significancr an illustration of the paradoxes of confirmation—has been a constant challenge for theories of confirmation.

Popper captured the crucial difference between material extensional generalizations and subjunctive intensional generalizations as follows:.

In Hempel aat the time, the most widely adopted introduction to the philosophy of science, which has been translated into ten other languages, he advanced the novel explication of scientific theories as consisting of internal principles and bridge principleswhere the lawlike hypotheses that distinguish theories are linked to observation, empirocist, and experiment by principles expressed in various mixtures of ordinary and of technical language.

Carl Gustav Hempel — Carl Hempel, a German-born philosopher who immigrated to the Criterka States, was one of the prominent philosophers of science in the twentieth century. The empirical study of the use of language within language-using communities by field linguists involves establishing the grammar and the vocabulary employed within each such community.

Carl Hempel, a German-born philosopher who immigrated to the United States, was one of the prominent philosophers of science in the twentieth century.


According to Hempel, this explanation gives a degree of probability r to the conclusion. Even a complete description of the history of the hemple world might not suffice to distinguish between them, where fundamental aspects of their causal structure would remain beyond empirical detection.

Carl Hempel (Stanford Encyclopedia of Philosophy)

Whether or not the conditions of explanatory adequacy should be relative to an epistemic context of confirmation rather than to an empiridist context of truth would become an important question in coping with the requirements for probabilistic explanations.

In a series of studies about cognitive significance and empirical testability, he demonstrated that the verifiability criterion implies that existential generalizations are meaningful, but that universal generalizations are not, even though they include general laws, the principal objects of scientific discovery. The following is a very simple example. The relevant fact is the logical relation between explanans and explanandum: The philosophy of science, therefore, cannot be displaced by history or by sociology.

Author Information Mauro Murzi Email: Things of different kinds can do different things. His position here makes it logically impossible for explanations, predictions and postdictions to not have the same logical form.

Hempel, Carl | Internet Encyclopedia of Philosophy

In the meantime, his philosophical perspective was changing and he detached from logical positivism: These conditions are intended to serve as requirements whose satisfaction guarantees that a proposed explanation is adequate. And among the public at empiircist and many social scientists, the tendency to no longer hold science in high esteem or to be affected by its findings has induced political ramifications that are inimical to the general good.

The reformulated conditions are:.