In the postface to the second edition of their book Relevance: Communi
cation and cognition, Sperber and Wilson describe the intellectual imp
act which has followed from the first edition of their text: ''The boo
k has been translated into several languages, its implications for pra
gmatic theory have been explored in a growing number of books and arti
cles; it has inspired work in neighbouring disciplines, including ling
uistics, literary studies, psychology and philosophy.'' (Sperber and W
ilson, 1995: 255) The appeal of relevance theory within certain academ
ic circles is beyond doubt, Its acceptance within pragmatics and relat
ed subjects is to be expected given the scientism which pervades cogni
tive disciplines. The scientism of these disciplines, scientific reduc
tionism, has in recent years come under increasing attack in the form
of the philosophical arguments of Hilary Putnam. Putnam's (1981) criti
que of the logical positivist account of rationality is particularly p
ertinent to this discussion. In this paper I demonstrate the exact nat
ure of the reductionism within Sperber and Wilson's account of relevan
ce, To this end, I examine their description of (1) the logical or ana
lytic entries of concepts, (2) the deductive device, and (3) the funct
ional concept of confirmation. In each case I will indicate how a redu
ctionist analysis brings about the destruction of the very notions whi
ch demand explanation.