Hilary Putnam pointed out that he does not know the difference between two types of these objects, but nonetheless uses their names to refer to different things, as an argument for semantic externalism.
In On Certainty, Wittgenstein discusses the different possible meanings of the sentence "I know that that's [one of these objects]." Early in I and Thou, Martin Buber lists five different relations that one can have with one of these objects. Hilary Putnam pointed out that he does not know the difference between two types of these objects, but nonetheless uses their names to refer to different things, as an argument for semantic externalism. An objection to Berkeley's idealism is presented in a (*) limerick about one of these objects in the quad. William James imagined a man running around one of these objects, who may or may not also be running around a squirrel, in Pragmatism. For 10 points, name these objects which may or may not make a sound if they fall in a forest and nobody's there
In On Certainty, Wittgenstein discusses the different possible meanings of the sentence "I know that that's [one of these objects].
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