more from E.J. Lemmon

### Single Idea 9538

#### [catalogued under 4. Formal Logic / B. Propositional Logic PL / 3. Truth Tables]

Full Idea

A truth-table test is entirely mechanical, ..and in propositional logic we can even generate proofs mechanically for tautological sequences, ..but this mechanical approach breaks down with predicate calculus, and proof-discovery is an imaginative process.

Gist of Idea

A truth-table test is entirely mechanical, but this won't work for more complex logic

Source

E.J. Lemmon (Beginning Logic [1965], 2.5)

Book Reference

Lemmon,E.J.: 'Beginning Logic' [Nelson 1979], p.91