Philosophy Lexicon of Arguments

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Necessity, philosophy: different kinds of necessity are distinguished, differing in their strength. For example, physical, logical or metaphysical necessity. See also necessity de dicto, necessity de re.

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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.
 
Author Item Excerpt Meta data

 
Books on Amazon
IV 37
Causally necessary/Lewis: is a sentence if it is true in all possible worlds in which the same laws of nature apply.
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Schw I 156
Necessary a posteriori: "Water is H2O" is a posteriori, because first of all you have to find out that the material that fills our streams and lakes is H2O.- necessary: in all possible worlds the substance that fills our streams is H2O - Discovery is contingent (chemical, not modal) - therefore, the H2O truths imply a priori the water truths.
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Rorty II 123
LewisVsWittgenstein: distinctions between essence and accidence or between necessity and contingency are an artificial product that changes with the description.
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Schw I 226
A posteriori necessary/Schwarz: e.g. the sentence "Everything is the way it really is" necessarily implies all truths, but only for the actual world - >Quidditism, >Panpsychism.


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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.

LW I
D. Lewis
Die Identität von Körper und Geist Frankfurt 1989

LW II
D. Lewis
Konventionen Berlin 1975

LW IV
D. Lewis
Philosophical Papers Bd I New York Oxford 1983

LW V
D. Lewis
Philosophical Papers Bd II New York Oxford 1986

LwCl I
Cl. I. Lewis
Mind and the World Order: Outline of a Theory of Knowledge (Dover Books on Western Philosophy) 1991

Ro I
R. Rorty
Der Spiegel der Natur Frankfurt 1997

Ro II
R. Rorty
Philosophie & die Zukunft Frankfurt 2000

Ro III
R. Rorty
Kontingenz, Ironie und Solidarität Frankfurt 1992

Ro IV
R. Rorty
Eine Kultur ohne Zentrum Stuttgart 1993

Ro V
R. Rorty
Solidarität oder Objektivität? Stuttgart 1998

Ro VI
R. Rorty
Wahrheit und Fortschritt Frankfurt 2000


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Ed. Martin Schulz, access date 2017-06-28