Measurements presuppose theories

(cited in Gillies’ “Philosophical theories of probability”): 

“Against this view [operationalism] it can be shown that measurements presuppose theories. There is no measurement without a theory and no operation which can be satisfactorily described in non-theoretical terms. The attempts to do so are always circular; for example, the description of the measurement of length needs a (rudimentary) theory of heat and temperature-measurement; but these in turn involve measurements of length.” (Popper, Conjectures and Refutations, 1963)

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  1. Pingback: Five quotations to help thinking about quantitative thinking | Figural Effect

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