### Single Idea 13826

#### [catalogued under 5. Theory of Logic / J. Model Theory in Logic / 1. Logical Models]

Full Idea

In model theory, which has dominated the last decades, one concentrates on logically valid sentences, and what follows logically from what, but one disregards questions concerning how we know these things.

Gist of Idea

Model theory looks at valid sentences and consequence, but not how we know these things

Source

Dag Prawitz (On the General Idea of Proof Theory [1974], §1)

Book Reference

'A Philosophical Companion to First-Order Logic', ed/tr. Hughes,R.I.G. [Hackett 1993], p.215