Category mistake
Encyclopedia
A category mistake, or category error, is a semantic or ontological
error in which "things of one kind are presented as if they belonged to another", or, alternatively, a property is ascribed to a thing that could not possibly have that property. All (propositional) mistakes involve some sort of misascription of properties, so in a sense any mistake is a "category mistake": putting a thing into a class to which it does not belong. But a "category mistake" in colloquial philosophical usage seems to be the most severe form of misascription, involving the endorsement of what is in fact logically impossible. Thus the mistaken claim that "Most Americans are atheists" is not a category mistake, since it is merely contingently
true that most Americans are theists. On the other hand, "Most bananas are atheists" is a category mistake. 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.
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 alleged 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. The first example is of a visitor to Oxford
. The visitor, upon viewing the colleges
and library
, reportedly inquired “But where is the University?" The visitor's mistake is presuming that a University is part of the category "units of physical infrastructure" or some such thing, rather than the category "institutions", say, which are far more abstract and complex conglomerations of buildings, people, procedures, and so on.
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?'
He goes on to argue that the Cartesian dualism of mind and body rests on a category-mistake.
Ontology
Ontology is the philosophical study of the nature of being, existence or reality as such, as well as the basic categories of being and their relations...
error in which "things of one kind are presented as if they belonged to another", or, alternatively, a property is ascribed to a thing that could not possibly have that property. All (propositional) mistakes involve some sort of misascription of properties, so in a sense any mistake is a "category mistake": putting a thing into a class to which it does not belong. But a "category mistake" in colloquial philosophical usage seems to be the most severe form of misascription, involving the endorsement of what is in fact logically impossible. Thus the mistaken claim that "Most Americans are atheists" is not a category mistake, since it is merely contingently
Contingency (philosophy)
In philosophy and logic, contingency is the status of propositions that are neither true under every possible valuation nor false under every possible valuation . A contingent proposition is neither necessarily true nor necessarily false...
true that most Americans are theists. On the other hand, "Most bananas are atheists" is a category mistake. 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 RyleGilbert Ryle
Gilbert Ryle , was a British philosopher, a representative of the generation of British ordinary language philosophers that shared Wittgenstein's approach to philosophical problems, and is principally known for his critique of Cartesian dualism, for which he coined the phrase "the ghost in the...
in his book The Concept of Mind
The Concept of Mind
The Concept of Mind is a book by the philosopher Gilbert Ryle. It argues that the concept of "mind" is "a philosophical illusion hailing chiefly from Descartes and sustained by logical errors and 'category mistakes' which have become habitual." Richard Webster praises its "lucidity and vigour",...
(1949) to remove what he argued to be a confusion over the nature of mind born from Cartesian metaphysics
Metaphysics
Metaphysics is a branch of philosophy concerned with explaining the fundamental nature of being and the world, although the term is not easily defined. Traditionally, metaphysics attempts to answer two basic questions in the broadest possible terms:...
. Ryle alleged 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. The first example is of a visitor to Oxford
University of Oxford
The University of Oxford is a university located in Oxford, United Kingdom. It is the second-oldest surviving university in the world and the oldest in the English-speaking world. Although its exact date of foundation is unclear, there is evidence of teaching as far back as 1096...
. The visitor, upon viewing the colleges
Colleges of the University of Oxford
The University of Oxford comprises 38 Colleges and 6 Permanent Private Halls of religious foundation. Colleges and PPHs are autonomous self-governing corporations within the university, and all teaching staff and students studying for a degree of the university must belong to one of the colleges...
and library
Bodleian Library
The Bodleian Library , the main research library of the University of Oxford, is one of the oldest libraries in Europe, and in Britain is second in size only to the British Library...
, reportedly inquired “But where is the University?" The visitor's mistake is presuming that a University is part of the category "units of physical infrastructure" or some such thing, rather than the category "institutions", say, which are far more abstract and complex conglomerations of buildings, people, procedures, and so on.
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?'
He goes on to argue that the Cartesian dualism of mind and body rests on a category-mistake.
See also
- catachresisCatachresisCatachresis is "misapplication of a word, especially in a mixed metaphor" according to the Penguin Dictionary of Literary Terms and Literary Theory...
- Colorless green ideas sleep furiouslyColorless green ideas sleep furiously"Colorless green ideas sleep furiously" is a sentence composed by Noam Chomsky in his 1957 Syntactic Structures as an example of a sentence that is grammatically correct but semantically nonsensical. The term was originally used in his 1955 thesis "Logical Structures of Linguistic Theory"...
- mixed metaphor