The situation can be best described by comparison with a searchlight (the ‘searchlight theory of science’, as I usually call it in contradistinction to the ‘bucket theory of the mind’3). What the searchlight makes visible will depend upon its position, upon our way of directing it, and upon its intensity, colour, etc.; although it will, of course, also depend very largely upon the things illuminated by it. Similarly, a scientific description will depend, largely, upon our point of view, our interests, which are as a rule connected with the theory or hypothesis we wish to test; although it will
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