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Full Idea
A representational theory of the mind is an externalist theory of the mind.
Clarification
'Externalism' means the mind cannot be wholly explained within the brain
Gist of Idea
A representational theory of the mind is an externalist theory of the mind
Source
Fred Dretske (Naturalizing the Mind [1997], §2)
Book Ref
Dretske,Fred: 'Naturalizing the Mind' [MIT 1997], p.40
A Reaction
Presumably brain events bring the world into the mind, so the world must be mentioned in explaining the mind. Maybe 'externalism' sounds grand, but is stating the boringly obvious. Explanations of mind need no mention of external particulars.