Published online by Cambridge University Press: 14 March 2022
In concluding section 2, chapter VI of part II of [6], Duhem claimed:
(I) ... the physicist can never subject an isolated hypothesis to experimental test, but only a whole group of hypotheses ... ([6], p. 187)
(II) ... when the experiment is in disagreement with his predictions, what he learns is that at least one of the hypotheses constituting this group is unacceptable and ought to be modified; but the experiment does not designate which one should be changed'. ([6], p. 187)