Assertion: concept's condition | /r/HasProperty | necessary
Facets:
value: individually
type: MANNER
Source sentences:
text: All complex concepts have individually necessary conditions, but at least one complex concept has no sufficient conditions of either sort.
text: All complex concepts have individually necessary conditions, but at least one complex concept has only at least one sufficient condition that does not have the form of a conjunction of individually necessary conditions.
text: At least five general theories of concepts have been proposed: The classical theory, which takes concepts to be analyzed in terms of necessary and jointly sufficient conditions; neoclassical theories, which hold that concepts have necessary conditions, but denies that all concepts have individually necessary conditions that are jointly sufficient; prototype theories, which take concepts to be accounted for in terms of lists of typical features (instead of metaphysically necessary conditions) or in terms of paradigm cases or exemplars; theory-theories, which take concepts to be entities individuated by the roles they play in internally represented “mental” theories (where such a theory is immanent in the mind and of some category or other); and atomistic theories, which take most concepts to be primitive unanalyzable entities.
text: At least five general theories of concepts have been proposed: The classical theory, which takes concepts to be analyzed in terms of necessary and jointly sufficient conditions; neoclassical theories, which hold that concepts have necessary conditions, but denies that all concepts have individually necessary conditions that are jointly sufficient; prototype theories, which take concepts to be accounted for in terms of lists of typical features (instead of metaphysically necessary conditions) or in terms of paradigm cases or exemplars; theory-theories, which take concepts to be entities individuated by the roles they play in internally represented “mental” theories (where such a theory is immanent in the mind and of some category or other); and atomistic theories, which take most concepts to be primitive unanalyzable entities.
text: The same predicament arises for any concepts sharing some necessary conditions and at least one sufficient condition.
text: According to the classical theory, a lexical concept C has definitional structure in that it is composed of simpler concepts that express necessary and sufficient conditions for falling under C.