@misc{Lexicon of Arguments, title = {Quotation from: Lexicon of Arguments – Concepts - Ed. Martin Schulz, 29 Mar 2024}, author = {Brandom,Robert}, subject = {Extensionality}, note = {I 499 Extensionality/Homogeneity: a context is extensional if the possible world equivalent relation does not have to be divided more finely than the designation equivalent relation: (Problem: the equivalence of "Snow is white" and "Grass is green"). - Therefore, the relationship between designated inferences and inferetial role of freestanding sentences is not homogeneous. - It is not sufficient to know whether the sentences are true inferences - (because sentences are no inferences at all). Therefore we need a different extensionality at the top level: a sentential context with embedded phrases is extensional in the sense of being part homogeneous iff the substitution of statements with the same inferential role never changes the inferential role of the contained sentence. >Inferential role. I 500 This is not always the case: E.g. the role of the expression "S claims that p" does not depend on the role p has for the speaker, but on the role he has for S. Cf. >Intensionality, >Intensions, >Extensions.}, note = { Bra I R. Brandom Making it exlicit. Reasoning, Representing, and Discursive Commitment, Cambridge/MA 1994 German Edition: Expressive Vernunft Frankfurt 2000 Bra II R. Brandom Articulating reasons. An Introduction to Inferentialism, Cambridge/MA 2001 German Edition: Begründen und Begreifen Frankfurt 2001 }, file = {http://philosophy-science-humanities-controversies.com/listview-details.php?id=220345} url = {http://philosophy-science-humanities-controversies.com/listview-details.php?id=220345} }