more from Saul A. Kripke

Single Idea 17057

[catalogued under 26. Natural Theory / D. Laws of Nature / 8. Scientific Essentialism / b. Scientific necessity]

Full Idea

We have discovered a phenomenon (heat) which in all possible worlds will be molecular motion - which could not have failed to be molecular motion, because that's what the phenomenon is.

Gist of Idea

Once we've found that heat is molecular motion, then that's what it is, in all possible worlds


Saul A. Kripke (Naming and Necessity lectures [1970], Lecture 3)

Book Reference

Kripke,Saul: 'Naming and Necessity' [Blackwell 1980], p.133

A Reaction

He refers to the identification as an 'essential property' of the phenomenon (and not merely a necessity). For my taste, Kripke uses the word 'property' too widely.