Abstract

Indeterminacy theories, such as Wittgenstein's and Kripke's indeterminacy principle on rules and language and Quine's indeterminacy of radical translation, raise some fundamental questions on our knowledge and understanding. In this paper we try to outline and interpret Wittgenstein's and Kripke's indeterminacy, and then compare it to some other related theories on indeterminacy of human thinking, such as raised by Hume, Quine, and Goodman.