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- Richard E. Aquila (1975). Perceptions and Perceptual Judgments. Philosophical Studies 28 (July):17-31.
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In this paper, I attempt to demonstrate the structure of Sellars' critical direct realism in the philosophy of perception. This position is original because it attempts to balance two claims that many have thought to be incompatible: (1) that perceptual knowledge is direct, i.e., not inferential, and (2) that perceptual knowledge is irreducibly conceptual. Even though perceptual episodes are not the result of inferences, they must still stand within the space of reasons if they are to be counted not only as knowledge, but also as thoughts directed at the world. The goal of this paper is to demonstrate how Sellars elaborates and defends this position.
I argue that perceptual content involves representations both of aspects of objects, and of objects themselves, whether at the level of conscious perception, or of low-level perceptual processing - a double content structure. I present an 'orientational' theory of the relations of the two kinds of perceptual content, which can accommodate both the general semantic possibility of perceptual misrepresentation, and also species of it involving characteristic perceptual confusions of aspectual and intrinsic content. The resulting theoretical structure is argued to be a broadly methodological or logical one, rather than a substantive theory that is open to empirical refutation.
This volume presents articles on epistemology and the theory of perception and introduces readers to the various problems that face a successful theory of perceptual knowledge. The contributors include Robert Nozick, Alvin Goldman, H.P. Grice, David Lewis, P.F. Strawson, Frank Jackson, David Armstrong, Fred Dretske, Roderick Firth, Wilfred Sellars, Paul Snowdon, and John McDowell.
In the Discourse on Metaphysics Leibniz writes, 'Our perceptions are always true, it is our judgments that come from ourselves that deceive us' (section 14). Leroy Loemker in his 'Leibniz's Doctrine of Ideas' criticizes this account of error. His main worry can be presented in the form of the following syllogistic argument, which he derives from Leibniz's doctrine of ideas: (a) There cannot be a false perception; (b) All judgments are perceptions; and therefore (c) There cannot be a false judgment. However, in this paper I argue that Leibniz can distinguish between a perception and a judgment in their semantic aspect. The sense in which a perception turns out to be false (or true) for Leibniz is different from the sense in which a judgment turns out to be false (or true). This is because, while a perception, understood in Leibniz's terms, lacks truth-conditions, a judgment, in being representational, has such conditions. Thus while a perception remains true always, a judgment can be false. Pointing to the equivocal use of 'false' in (a) and (c) above, I conclude that (c) does not follow from (a) and (b).
The notion of perceptual content is commonly introduced in the analysis of perception. It stems from an analogy between perception and propositional attitudes. Both kinds of mental states, it is thought, have conditions of satisfaction. I try to show that on the most plausible account of perceptual content, it does not determine the conditions under which perceptual experience is veridical. Moreover, perceptual content must be bipolar (capable of being correct and capable of being incorrect), whereas perception as a mental state is not (if it is veridical, it is essentially so). This has profound consequences for the epistemological view that perception is a source of knowledge. I sktech a two-level epistemology which is consistent with this view. I conclude that the analogy between perception and propositional attitudes, from which the notion of perceptual content is born, may be more misleading than it is usually thought.
Studies in Wilfrid Sellars' philosophy: Aune, B. Sellars on practical reason.--Castañeda, H.-N. Some reflections on Wilfrid Sellars' theory of intentions.--Donagan, A. Determinism and freedom: Sellars and the reconciliationist thesis.--Robinson, W. S. The legend of the given.--Clark, R. The sensuous content of perception.--Grossmann, R. Perceptual objects, elementary particles, and emergent properties.--Rosenberg, J. F. The elusiveness of categories, the Archimedean dilemma, and the nature of man: a study in Sellarsian metaphysics.--Turnbull, R. G. Things, natures, and properties.--Wells, R. The indispensable word "now."--Van Fraassen, B. C. Theories and counterfactuals.--Harman, G. H. Wilfrid Sellars' Theory of induction.--Sellarsiana: Sellars, W. Autobiographical reflections.--Sellars, W. The structure of knowledge. Lecture I, perception. Lecture II, minds. Lecture III, epistemic principles.--Wilfrid Sellars' Philosophical bibliography. (p. 349-353).
I argue that a Sellarsian approach to experience allows one to take seriously the thought that there is something given to us in perception without denying that we can only be conscious of conceptually structured content. I argue against the traditional empiricist reading of Sellars, according to which sensations are understood as epistemically graspable prior to concrete propositional representations, by showing that it is unclear on such a view why sensations are not just the given as Sellars so famously criticizes it. I suggest an alternative transcendental reading, according to which there are two sides to the subject matter of perceptual judgments: The matter given in perception (sensation), and its form (intuition). I present an account of sensations and intuitions on which it is unproblematic to see sensations as what is given in perception: They are not intelligible independently of their role as the matter of intuitions, the content of which is accessible to us only in the context of a judgment.
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