Truth, trivialism, and perceptual illusions

Otávio Bueno

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations


Dialetheism is the view according to which some contradictions (i.e., statements of the form, A and not-A) are true. In this paper, I discuss three strategies to block dialetheism: (i) Contradictions cannot be true because some theories of truth preclude them from emerging. (ii) Contradictions cannot be true because we cannot see what it is like to perceive them. Although that does not undercut the possibility that there are true contradictions that we cannot perceive, it makes their introduction a genuine cost. (iii) Contradictions cannot be true because if they were, we would end up sliding down into believing that everything is true (trivialism). Even if the dialetheist is not committed to that slippery slope, it is crucial that the dialetheist establishes that trivialism is unacceptable; but it is not clear how that could be done successfully. Graham Priest has considered these strategies (in his Doubt Truth to be a Liar), but I argue that none of his responses successfully block them.

Original languageEnglish (US)
Title of host publicationNew Directions in Paraconsistent Logic - 5th WCP
EditorsSoma Dutta, Jean-Yves Beziau, Mihir Chakraborty
PublisherSpringer New York LLC
Number of pages12
ISBN (Print)9788132227175
StatePublished - 2015
Externally publishedYes
Event5th World Congress on Paraconsistency, WCP 2014 - Kolkata, India
Duration: Feb 13 2014Feb 17 2014

Publication series

NameSpringer Proceedings in Mathematics and Statistics
ISSN (Print)2194-1009
ISSN (Electronic)2194-1017


Other5th World Congress on Paraconsistency, WCP 2014


  • Dialetheism
  • Graham priest
  • Perceptual illusions
  • Trivialism
  • Truth

ASJC Scopus subject areas

  • Mathematics(all)


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