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Twin Earth thought experiment - Wikipedia

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Twin Earth is a thought experiment proposed by philosopher Hilary Putnam in his papers "Meaning and Reference" (1973) and "The Meaning of 'Meaning'" (1975). It is meant to serve as an illustration of his argument for semantic externalism, or the view that the meanings of words are not purely psychological. The Twin Earth thought experiment was one of three examples that Putnam offered in support of semantic externalism, the other two being what he called the Aluminum-Molybdenum case and the Beech-Elm case. Since the publication of these cases, numerous variations on the thought experiment have been proposed by philosophers. Putnam's original formulation of the experiment was this: We begin by supposing that elsewhere in the universe there is a planet exactly like Earth in virtually all aspects, which we refer to as "Twin Earth". (We should also suppose that the relevant surroundings are exactly the same as for Earth; it revolves around a star that appears to be exactly like our sun, an

Twin Earth thought experiment - Wikipedia Jump to content From Wikipedia, the free encyclopedia Thought experiment proposed by Hilary Putnam The Twin Earth thought experiment posits a second Earth which is identical in all ways except one. Twin Earth is a thought experiment proposed by philosopher Hilary Putnam in his papers "Meaning and Reference" (1973) and "The Meaning of 'Meaning ' " (1975). It is meant to serve as an illustration of his argument for semantic externalism , or the view that the meanings of words are not purely psychological. The Twin Earth thought experiment was one of thre

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