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, 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 Cricket is a bat-and-ball game played between two teams of eleven players on a field at the centre of which is a pitch with a wicket at each end, each comprising two bails balanced on three stumps. The batting side scores runs by striki ...

involves team spirit, and after being given a demonstration of each player's role, asking which player performs the "team spirit". Unlike

bowling Bowling is a target sport and recreational activity in which a player rolls a ball toward pins (in pin bowling) or another target (in target bowling). The term ''bowling'' usually refers to pin bowling (most commonly ten-pin bowling), thoug ...

or batting, team spirit is not a task in the game but an aspect of how the team behaves as a group. 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 Gilbert Ryle (19 August 1900 – 6 October 1976) was a British philosopher, principally known for his critique of Cartesian dualism, for which he coined the phrase "ghost in the machine." He was a representative of the generation of British ord ...

in his book ''

The Concept of Mind ''The Concept of Mind'' is a 1949 book by philosopher Gilbert Ryle, in which the author argues that "mind" is "a philosophical illusion hailing chiefly from René Descartes and sustained by logical errors and 'category mistakes' which have becom ...

'' (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. The first example is of a visitor to Oxford. The visitor, upon viewing the

colleges A college (Latin: ''collegium'') is an educational institution or a constituent part of one. A college may be a degree-awarding tertiary educational institution, a part of a collegiate or federal university, an institution offering ...

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" 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?" He goes on to argue that the

Cartesian dualism Cartesian means of or relating to the French philosopher René Descartes—from his Latinized name ''Cartesius''. It may refer to: Mathematics *Cartesian closed category, a closed category in category theory *Cartesian coordinate system, modern ...

of mind and body rests on a category mistake.

References

{{DEFAULTSORT:Category Mistake Informal fallacies Philosophy of language Arguments in philosophy of mind Error

Gilbert Ryle

See also

References