Perceptual indiscriminability : in defence of Wright's proof

Rafael DE CLERCQ, Leon HORSTEN

Research output: Journal PublicationsJournal Article (refereed)

10 Citations (Scopus)

Abstract

A series of unnoticeably small changes in an observable property may add up to a noticeable change. Crispin Wright has used this fact to prove that perceptual indiscriminability is a non-transitive relation. Delia Graff has recently argued that there is a 'tension' between Wright's assumptions. But Graff has misunderstood one of these, that 'phenomenal continua' are possible; and the other, that our powers of discrimination are finite, is sound. If the first assumption is properly understood, it is not in tension with but is actually implied by the second, given a plausible physical assumption.
Original languageEnglish
Pages (from-to)439-444
Number of pages6
JournalThe Philosophical Quarterly
Volume54
Issue number216
DOIs
Publication statusPublished - 1 Jul 2004
Externally publishedYes

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