MacDonald, Margaret. Verification and Understanding
1934, Proceedings of the Aristotelian Society, 34(1): 143–156
Added by: Viviane Fairbank, Contributed by: Viviane Fairbank
Abstract:
The object of this paper is to discuss one or two points arising out of the view held by certain modern philosophers that the whole meaning of a proposition is given in a set of conditional propositions about the experiences which would verify it. Or, as C. S. Peirce said, that " the rational meaning of every propo- sition lies in the future." And for these philosophers to say that the proposition is true is just to say that if I get into certain situations I do have the prescribed experiences which verify the proposition. A proposition (or arrangement of signs)t which cannot be so verified is either tautological, e.g., the "propositions" of logic and mathematics, or it is just metaphysical nonsense. Our idea of anything is our idea of its sensible effects, and if we fancy we have any other we are deceiving ourselves with empty.... Now it may be true that the scientist does tend to identify what he understands with the means of its verification, but it is also true that verification is usually employed in science and elsewhere, not to establish the meaning of propositions, but to prove them true. This, I think, is the usual meaning of the word "verification" and a confusion between these two quite different uses of the word by positivist philosophers leads to certain paradoxical results.
The object of this paper is to discuss one or two points arising out of the view held by certain modern philosophers that the whole meaning of a proposition is given in a set of conditional propositions about the experiences which would verify it. Or, as C. S. Peirce said, that " the rational meaning of every propo- sition lies in the future." And for these philosophers to say that the proposition is true is just to say that if I get into certain situations I do have the prescribed experiences which verify the proposition. A proposition (or arrangement of signs)t which cannot be so verified is either tautological, e.g., the "propositions" of logic and mathematics, or it is just metaphysical nonsense. Our idea of anything is our idea of its sensible effects, and if we fancy we have any other we are deceiving ourselves with empty.... Now it may be true that the scientist does tend to identify what he understands with the means of its verification, but it is also true that verification is usually employed in science and elsewhere, not to establish the meaning of propositions, but to prove them true. This, I think, is the usual meaning of the word "verification" and a confusion between these two quite different uses of the word by positivist philosophers leads to certain paradoxical results.
Comment: MacDonald's discussion and critique of the verificationist theory of meaning is clear and concise, touching on work by C.I. Lewis, Peirce, and Whitehead. It would be suitable as assigned reading for any introductory course that includes logical positivism and related issues.