In 1994, Searle argued that the ideas upon which "deconstruction" is founded are essentially a consequence of a series of conceptual confusions made by Derrida as a result of his outdated knowledge or are merely banalities. He insisted that Derrida's conception of "iterability" and its alleged "corrupting" effect on meaning stems from Derrida's ignorance of the type–token distinction that exists in current linguistics and philosophy of language. As Searle explains, "Most importantly, from the fact that different tokens of a sentence type can be uttered on different occasions with different intentions, that is, different speaker meanings, nothing of any significance follows about the original speaker meaning of the original utterance token."