It is known that physics is empirical science, in the sense that all propositions should be verified by experiments. But Bertrand Russell once remarked that the principle of verifiability itself cannot be verified, therefore it cannot be considered a principle of science.

In a 1917 paper, Bertrand suggested sense-data to replace the problem of verifiability in physics science (http://selfpace.uconn.edu/class/ana/RussellRelationSenseData.pdf), but later he changed his mind. see http://www.mcps.umn.edu/philosophy/12_8savage.pdf

So what do you think? Is there a role for sense-data in epistemology of modern physics?

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