|Similarity: conformity of one or more - but not all - properties of two or more objects._____________Annotation: The above characterizations of concepts are neither definitions nor exhausting presentations of problems related to them. Instead, they are intended to give a short introduction to the contributions below. – Lexicon of Arguments. |
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Form: equality and diversity are part of the logical form, not the content.
Re III 105
Similarity analysis: a number of logical principles that are classically valid, fails here. For example, the
(Definition) Contraposition: that
"If B, then not-A" from "if A, then not-B" follows.
The similar world in which it rains can very well be one in which it rains only lightly. But the most similar world, in which it rains violently, cannot be one in which it does not rain at all.
Re III 105f
Similarity: But worlds in which Lewis is 2.02, 2.01, 2.005 meters tall are progressively similar to the real world, yet this sequence has no limit.
Re III 111
Vs Similarity Theory:
1. It makes all conditional sets with true if-and then-sentences true. But in this respect it is in error: many such conditional sentences are false._____________Explanation of symbols: Roman numerals indicate the source, arabic numerals indicate the page number. The corresponding books are indicated on the right hand side. ((s)…): Comment by the sender of the contribution.
Me I Albert Menne Folgerichtig Denken Darmstadt 1988
HH II Hoyningen-Huene Formale Logik, Stuttgart 1998
Re III Stephen Read Philosophie der Logik Hamburg 1997
Sal IV Wesley C. Salmon Logik Stuttgart 1983
Sai V R.M.Sainsbury Paradoxien Stuttgart 2001