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Single Idea 13504

[from 'The Evolution of Logic' by William D. Hart, in 3. Truth / F. Semantic Truth / 1. Tarski's Truth / b. Satisfaction and truth ]

Full Idea

We explain truth for sentences in terms of satisfaction of formulae. The crux here is that for a sentence, either all sequences satisfy it or none do (with no middle ground). For formulae, some sequences may satisfy it and others not.

Gist of Idea

Truth for sentences is satisfaction of formulae; for sentences, either all sequences satisfy it (true) or none do

Source

William D. Hart (The Evolution of Logic [2010], 4)

Book Reference

Hart,W.D.: 'The Evolution of Logic' [CUP 2010], p.107


A Reaction

This is the hardest part of Tarski's theory of truth to grasp.