The difficulty about the naive realism which most people take for granted and which some empirical philosophers try to defend is that its proponents, in seeking to preserve the objective world of common sense, virtually read out of the picture the contribution of the perceiving subject and all that is involved in the relatedness of sense experience. The visual phenomena of perspective, distortion and hallucination, and the dependence of all other sense experience upon varying physiological factors in the percipient make (...) it well nigh impossible to believe that everything is just what we observe it to be; and the physicist's account of a world of electrical charges symbolized by mathematical formulae deals in conceptual terms which transcend sensual imagery. The resort to the sense-datum theory was but a desperate attempt on the part of philosophers to preserve the plain man's view of reality, though it left wholly obscure the relationship between the world of common sense experience and that of physical science, as well as positing a fantastic multiplication of entities corresponding to everything that could be observed under any circumstances. (shrink)

Is Perception a form of judgment? The importance of this question is that it brings to the fore a crucial issue for modern perceptionempiricism. If perception is not a form ofjudgment, it is possible o t maintain, though still with considerable difficulty, that the senses acquaint us directly with the physical world and that a metaphysical account of reality can be excluded without undermining what the ordinary layman and the scientist alike claim to know. Judgment can then be discussed from (...) the linguistic standpoint without raising any serious ontological questions. If, on the other hand, perception is judgment, or if in perceiving we inevitably go beyond that which is presented to the senses, then metaphysics is unavoidable unless we are prepared to abandon the hope of knowing anything at all. (shrink)