Philosophy Lexicon of Arguments

Decision theory: is not about decidability of problems within finite time, but about the consequences of decisions. See also rationality, actions, consequentialism, consequence, practical inference, decidability, counterfactual conditionals.
Author Item Excerpt Meta data
Lewis, David
Books on Amazon
Decision Theory V 307f
Decision Theory/DT/Lewis: partition/Division)/ET/Lewis: (see above) is a set of propositions, of which exactly one applies in each world (or each X-world) - provide the most detailed specification of the present actions (options) of the actor - Decision theory: says which options are rational - rational choice: delivers the greatest benefit expected - maximum benefit: if V(A) is not surpassed by any V(A™) - problem: how do you find out that A applies - that one is living in the world A (= Proposition)? - Important argument: it is in your power, to make the news yourself - that is, you find out what they like best by producing it.
V 309f
Non-Causal Decision Theory/Newcomb’s Paradox/NP/LewisVs: favors the rejection of small goods as rational - although this later choice does nothing to change the previous state, which favors the evil - Newcomb's Paradox: requires a causal decision theory.
V 315
Non-causal decision theory: only works, because the beliefs of the actor allow it to function - ... + ... Partition of propositions (sets of possible worlds), expected benefits.
Schwarz I 66
Decision-making procedure/Lewis: the modal realism is not a decision-making procedure to answer questions about possible worlds. Decision-making procedure/Schwarz: E.g. is not used by behaviorists either: he simply says that statements about mental properties are reducible to statements about dispositions - E.g. mathematical Platonism: does not need decision-making procedure for arithmetics.

D. Lewis
Die Identität von Körper und Geist Frankfurt 1989

D. Lewis
Konventionen Berlin 1975

D. Lewis
Philosophical Papers Bd I New York Oxford 1983

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

Schw I
W. Schwarz
David Lewis Bielefeld 2005

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Ed. Martin Schulz, access date 2017-03-24