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Single Idea 15366

[filed under theme 5. Theory of Logic / I. Semantics of Logic / 4. Satisfaction ]

Full Idea

Satisfaction is a more primitive notion than truth, and it is even more susceptible to semantical paradoxes than the truth predicate.

Gist of Idea

Satisfaction is a primitive notion, and very liable to semantical paradoxes

Source

Leon Horsten (The Tarskian Turn [2011], 06.3)

Book Ref

Horsten,Leon: 'The Tarskian Turn' [MIT 2011], p.74


A Reaction

The Liar is the best known paradox here. Tarski bases his account of truth on this primitive notion, so Horsten is pointing out the difficulties.


The 12 ideas with the same theme [evaluating as True after all truth assignments are made]:

A sentence is satisfied when we can assert the sentence when the variables are assigned [Tarski]
Satisfaction is the easiest semantical concept to define, and the others will reduce to it [Tarski]
'Satisfaction' is a generalised form of reference [Davidson]
A truth assignment to the components of a wff 'satisfy' it if the wff is then True [Enderton]
|= should be read as 'is a model for' or 'satisfies' [Hodges,W]
An open sentence is satisfied if the object possess that property [Kirkham]
'Satisfaction' is a function from models, assignments, and formulas to {true,false} [Shapiro]
A sentence is 'satisfiable' if it has a model [Shapiro]
Validity (for truth) and demonstrability (for proof) have correlates in satisfiability and consistency [Burgess]
A sentence-set is 'satisfiable' if at least one truth-assignment makes them all true [Zalabardo]
Some formulas are 'satisfiable' if there is a structure and interpretation that makes them true [Zalabardo]
Satisfaction is a primitive notion, and very liable to semantical paradoxes [Horsten]