Category Mistake
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Category Mistake

A category mistake, or category error, or categorical mistake, or mistake of category, is a semantic or ontological error in which things belonging to a particular category are presented as if they belong to a different category,[1] or, alternatively, a property is ascribed to a thing that could not possibly have that property. An example is a person learning that the game of cricket involves team spirit, and after being given a demonstration of each player's role, asking which player performs the "team spirit": team spirit is not a task in the game like bowling or batting, but an aspect of how the team behave as a group.[2]

To show that a category mistake has been committed one must typically show that once the phenomenon in question is properly understood, it becomes clear that the claim being made about it could not possibly be true.

Gilbert Ryle

The term "category-mistake" was introduced by Gilbert Ryle in his book The Concept of Mind (1949) to remove what he argued to be a confusion over the nature of mind born from Cartesian metaphysics. Ryle argued that it was a mistake to treat the mind as an object made of an immaterial substance because predications of substance are not meaningful for a collection of dispositions and capacities.[]

The phrase is introduced in the first chapter.[3] The first example is of a visitor to Oxford. The visitor, upon viewing the colleges and library, reportedly inquired "But where is the University?"[4] The visitor's mistake is presuming that a University is part of the category "units of physical infrastructure" rather than that of an "institution". Ryle's second example is of a child witnessing the march-past of a division of soldiers. After having had battalions, batteries, squadrons, etc. pointed out, the child asks when is the division going to appear. "The march-past was not a parade of battalions, batteries, squadrons and a division; it was a parade of the battalions, batteries and squadrons of a division." (Ryle's italics) His third example is of a foreigner being shown a cricket match. After being pointed out batsmen, bowlers and fielders, the foreigner asks: "who is left to contribute the famous element of team-spirit?"[3]

He goes on to argue that the Cartesian dualism of mind and body rests on a category mistake. In the philosophy of the mind, Ryle's category mistake argument can be used to support eliminative materialism. By using the argument, one can attack the existence of a separate, distinct mind. The argument concludes that minds are not conscious, but a collective predicate for a set of observable behaviour and unobservable dispositions.[5]

See also


  1. ^ Blackburn, Simon (1994). The Oxford Dictionary of Philosophy. Oxford University Press. p. 58.
  2. ^ Lacewing, Michael (14 July 2017). Philosophy for A Level: Metaphysics of God and Metaphysics of Mind. Taylor & Francis. ISBN 978-1-351-67460-7.
  3. ^ a b Ryle, Gilbert (1949). The Concept of Mind. p. 16. ISBN 9780226732961.
  4. ^ MacFadden, T. G. (Summer 2001). "Understanding the Internet: Model, Metaphor, and Analogy" (PDF). Library Trends. Baltimore: Johns Hopkins University Press. 50 (1): 96. Retrieved 2014.
  5. ^ Welshon, Rex (2011). Philosophy, Neuroscience and Consciousness. Durham: Acumen. p. 28. ISBN 978-1-84465-159-7.

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