The Argument from Perceptual Relativity
Perhaps the best-known method of introducing sense-data is by means of the Argument from Perceptual Relativity. This argument can be found in the writings of philosophers from antiquity to present times, and there are many different ways of formulating it.1 I shall begin by expounding (only) what seems to me to be the strongest version of the argument; then I shall present the most important contemporary objection to the argument; and finally I shall try to specify the considerations on the basis of which the issue raised by this objection should ultimately be resolved.
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