Kant: Synthesis

The paper offers a model of Kant's claim that unity of consciousness entails objectivity of experience. This claim has nothing especially to do with thought, language or the categories but is a general truth about arbitrary signaling systems of the sort modeled in the paper. In conclusion I draw some consequences for various forms of idealism.

The author explores the differing forms of unity in the transcendental conditions for the synthesis of experience.

Abstract Both parties in the active philosophical debate concerning the conceptual character of perception trace their roots back to Kant's account of sensible intuition in the Critique of Pure Reason. This striking fact can be attributed to Kant's tendency both to assert and to deny the involvement of our conceptual capacities in sensible intuition. He appears to waver between these two positions in different passages, and can thus seem thoroughly confused on this issue. But this is not, in fact, the (...) case, for, as I will argue, the appearance of contradiction in his account stems from the failure of some commentators to pay sufficient attention to Kant's developmental approach to philosophy. Although he begins by asserting the independence of intuition, Kant proceeds from this nonconceptualist starting point to reveal a deeper connection between intuitions and concepts. On this reading, Kant's seemingly conflicting claims are actually the result of a careful and deliberate strategy for gradually convincing his readers of the conceptual nature of perception. (shrink)

In the transcendental deduction, the central argument of the Critique of Pure Reason, Kant seeks to secure the objective validity of our basic categories of thought. He distinguishes objective and subjective sides of this argument. The latter side, the subjective deduction, is normally understood as an investigation of our cognitive faculties. It is identified with Kant’s account of a threefold synthesis involved in our cognition of objects of experience, and it is said to precede and ground Kant’s proof of the (...) validity of the categories in the objective deduction. I challenge this standard reading of the subjective deduction, arguing, first, that there is little textual evidence for it, and, second, that it encourages a problematic conception of how the deduction works. In its place, I present a new reading of the subjective deduction. Rather than being a broad investigation of our cognitive faculties, it should be seen as addressing a specific worry that arises in the course of the objective deduction. The latter establishes the need for a necessary connection between our capacities for thinking and being given objects, but Kant acknowledges that his readers might struggle to comprehend how these seemingly independent capacities are coordinated. Even worse, they might well believe that in asserting this necessary connection, Kant’s position amounts to an implausible subjective idealism. The subjective deduction ismeant to allay these concerns by showing that they rest on a misunderstanding of the relation between these faculties. This new reading of the subjective deduction offers a better fit with Kant’s text. It also has broader implications, for it reveals the more philosophically plausible account of our relation to the world as thinkers that Kant is defending – an account that is largely obscured by the standard reading of the subjective deduction. (shrink)

How synthetic a priori judgments possible problem is that Kant's "Critique of Pure Reason," the basic problem. Possibility of a priori truth is the problem, and integrated synthetic a priori judgments is to answer the key question of truth. This comprehensive concept of Kant's four-fold meaning of the study, which is a comprehensive concept of logic, epistemology, the concept of an integrated, comprehensive concept of methodology, the comprehensive concept of ontology. In this paper, the analysis related to the concept of (...) a joint examination, but also pointed out that the concept of comprehensive and clues throughout the cornerstone of criticism lies. How the sythetic judgements a priori are possible is the basic problem of kant's critic of pure reason. The question of the possibility is also the question of transendental truth, and to answer it, the concept of synthesis is the pivot. The fourfold meaning of the concept of synthesis is investigated in this article, which is the sythesis of the logic, the epistemology, the methodology, and the ontology. The related concept of analysis is also investigated jointly, but it is emphasized that the concept of synthesis is the footstone and clue of the whole critic. (shrink)

Are the pure intuitions of space and time, for Kant, dependent upon the understanding's activity? This paper defends the recently popular Self-Affection Thesis : namely, that the pure intuitions require an activity of self-affection—an influence of the understanding on the inner sense. Two systematic objections to this thesis have been raised: The Independence objection claims that SAT undermines the independence of sensibility; the Compatibility objection claims that certain features of space and time are incompatible with being the products of the (...) understanding's activity. I show that the resources to rebut these objections can be found in Kant's account of causal influence. (shrink)

This paper defends an interpretation of the representational function of sensation in Kant's theory of empirical cognition. Against those who argue that sensations are ?subjective representations? and hence can only represent the sensory state of the subject, I argue that Kant appeals to different notions of subjectivity, and that the subjectivity of sensations is consistent with sensations representing external, spatial objects. Against those who claim that sensations cannot be representational at all, because sensations are not cognitively sophisticated enough to possess (...) intentionality, I argue that Kant does not use the term ?Vorstellung? to refer to intentional mental states exclusively. Sensations do not possess their own intentionality, but they nevertheless perform a representational function in virtue of their role as the matter of empirical intuition. In empirical intuition, the sensory qualities given in sensation are combined with the representation of space to constitute the intuited appearance. The representational function of sensation consists in sensation being the medium out of which intuited appearances are constituted: the qualities of sensations stand in for what the understanding will judge (conceptualize) as material substance. (shrink)

Overview -- Locke's internal sense and Kant's changing views -- Personal identity amd its problems -- Rationalist metaphysics of mind -- Consciousness, self-consciousness, and cognition -- Strands of Argument in the Duisburg Nachlass -- A transcendental deduction for a priori concepts -- Synthesis : why and how? -- Arguing for apperception -- The power of apperception -- "I-think" as the destroyer of rational psychology -- Is Kant's theory consistent? -- The normativity objection -- Is Kant's thinker (as such) a free (...) and responsible agent? -- Kant our contemporary. (shrink)

In the recent debate between conceptualists and nonconceptualists about perceptual content, Kant’s notion of intuition has been invoked on both sides. Conceptualists claim Kant as a forerunner of their position, arguing that Kantian intuitions have the same kind of content as conceptual thought. On the other hand, nonconceptualists claim Kant as a forerunner of their own position, contending that Kantian intuitions have a distinctly nonconceptual kind of content. In this paper, I argue first, that both sides are wrong about Kant, (...) secondly, that neither side can properly account for the epistemic function of intuition, and thirdly, that Kant’s own notion of intuition contains the resources for a third alternative. The epistemic function of an intuition for Kant is to furnish the sensory representation of an object of cognition. Conceptualism cannot account for this function because it construes perception as a species of thought. As a proper appreciation of Kant’s reasons for insisting upon the heterogeneity of thought and perception puts one in a position to see, any view that does this will fail to do justice to the distinctly sensory nature of intuition. Nonconceptualism, on the other hand, cannot account for the epistemic function of intuition because it views intuition as self-standing, and thus as completely independent from thought. As a consequence, nonconceptualism is not entitled to claim that an intuition is itself a cognitive state. I show that Kant’s actual view avoids both these extremes because it involves a different way of conceiving how perception is informed by conceptual thought. Building on this conception, Kant is able to preserve the distinctly sensory nature of intuition, while also securing proper cognitive standing for it. As a result, Kant’s notion of intuition provides the resources for an alternative account of how thought relates to the senses – one that avoids the shortcomings of the positions staked out in the contemporary debate. (shrink)

According to Kant the figurative synthesis and the schemata are both serving the mediation of intuition and concept. In this article, I investigate their respective functions and the special manner of their cooperation in the process of knowledge. Kant prefers geometrical concepts as examples for schemata. The schema of a triangle is a rule to construct it, that is a rule which is able to produce an image. The representation of a triangle requires a construction, which is an action of (...) the pure productive imagination: the figurative synthesis connects the manifold in pure intuition following the rules for construction. But important aspects remain hidden in mathematical examples. It is after all the same figurative synthesis which enables us to apprehend an object with the use of empirical concepts (A 224/B 271). This action of imagination and its cooperation with schematization becomes especially clear in the use of empirical concepts. (shrink)

In the 82/2 (2000) issue of this journal, Michael Friedman has offered a stimulating discussion of my recent book, Kant and the Capacity to Judge. His conclusion is that on the whole I fail to do justice to what is most revolutionary about Kant's natural philosophy, and instead end up attributing to Kant a pre-Newtonian, Aristotelian philosophy of nature. This is because, according to Friedman, I put excessive weight on Kant's claim to have derived his categories from a set of (...) logical forms of judgment which he inherits from a traditional Aristotelian logic. In taking Kant at his word on this point, I fail to give their full import to Kant's insights into the newly discovered applications of mathematical concepts and methods to the science of nature. (shrink)

My aim in this paper is to offer a systematic analysis of a feature of Kant’s theory of perception that tends to be overlooked, viz., his account of how the imagination forms images in perception. Although Kant emphasizes the centrality of this feature of perception, indeed, calling it a ‘necessary ingredient’ of perception, commentators have instead focused primarily on his account of sensibility and intuitions on the one hand, and understanding and concepts on the other. However, I show that careful (...) attention to what he says about the nature of images, their connection to the imagination, and their role in perception in his Metaphysics Lectures, as well as in the Deduction and Schematism chapters of the first Critique reveals that Kant is working with a richer, more nuanced framework for perception than is often attributed to him. I contend that it is only once we have a revised framework for Kant’s theory of perception in place that we will be able to make further headway in debates, e.g., about whether or not he is a conceptualist about perception. (shrink)

Starting from the assumption that Kant allows for the possible existence of conscious sensory states in non-rational animals, I examine the textual and philosophical grounds for his acceptance of the possibility that such states are also 'objective'. I elucidate different senses of what might be meant in crediting a cognitive state as objective. I then put forward and defend an interpretation according to which the cognitive states of animals, though extremely limited on Kant's view, are nevertheless minimally objective.

My question here concerns whether Kant claims that experience has nonconceptual content, or whether, on his view, experience is essentially conceptual. However there is a sense in which this debate concerning the content of intuition is ill-conceived. Part of this has to do with the terms in which the debate is set, and part to do with confusion over the connection between Kant’s own views and contemporary concerns in epistemology and the philosophy of mind. However, I think much of the (...) substance of the debate concerning Kant’s views on the content of experience can be salvaged by reframing it in terms of a debate about the dependence relations, if any, that exist between different cognitive capacities. Below, in Section 2, I clarify the notion of ‘content’ I take to be at stake in the interpretive debate. Section 3 presents reasons for thinking that intuition cannot have content in the relevant sense. I then argue, in Section 4, that the debate be reframed in terms of dependence. We should distinguish between Intellectualism, according to which all objective representation (understood in a particular way) depends on acts of synthesis by the intellect, and Sensibilism, according to which at least some forms of objective representation are independent of any such acts (or the capacity for such acts). Finally, in Section 5, I further elucidate the cognitive role of intuition. I articulate a challenge which Kant understands alethic modal considerations to present for achieving cognition, and argue that a version of Sensibilism that construes intuition as a form of acquaintance is better positioned to answer this challenge than Intellectualism. (shrink)

I argue that Kant’s distinction between the cognitive roles of sensibility and understanding raises a question concerning the conditions necessary for objective representation. I distinguish two opposing interpretive positions—viz. Intellectualism and Sensibilism. According to Intellectualism all objective representation depends, at least in part, on the unifying synthetic activity of the mind. In contrast, Sensibilism argues that at least some forms of objective representation, specifically intuitions, do not require synthesis. I argue that there are deep reasons for thinking that Intellectualism is (...) incompatible with Kant's view as expressed in the Transcendental Aesthetic. We can better see how Kant’s arguments in the first Critique may be integrated, I suggest, by examining his notion of the 'unity' [Einheit] of a representation. I articulate two distinct ways in which a representation may possess unity and claim that we can use these notions to integrate Kant’s arguments in the Aesthetic and the Transcendental Deduction without compromising the core claims of either Sensibilism or Intellectualism—that intuition is a form of objective representation independent of synthesis, and that the kind of objective representations that ground scientific knowledge of the world require synthesis by the categories. (shrink)

One of the central debates in contemporary Kant scholarship concerns whether Kant endorses a “conceptualist” account of the nature of sensory experience. Understanding the debate is crucial for getting a full grasp of Kant's theory of mind, cognition, perception, and epistemology. This paper situates the debate in the context of Kant's broader theory of cognition and surveys some of the major arguments for conceptualist and non-conceptualist interpretations of his critical philosophy.

In an intriguing but neglected passage in the Transcendental Deduction, Kant appears to link the synthetic activity of the understanding in experience with the phenomenon of attention (B156-7n). In this paper, we take up this hint, and draw upon Kant's remarks about attention in the Anthropology to shed light on the vexed question of what, exactly, the understanding's role in experience is for Kant. We argue that reading Kant's claims about synthesis in this light allows us to combine two aspects (...) of Kant's views that many commentators have thought are in tension with one another: on the one hand, Kant's apparent commitment to naïve realism about perception and, on the other, his apparent commitment to the necessity of synthetic activity by the understanding for any kind of cognitive contact with external objects. (shrink)

This essay discusses Kant’s account of truth, arguing that he offers us a weak coherence theory: weak for his insistence on an independent, sensuous content for intuition, coherentist for the transcendental apparatus supporting experience. While Kant is free to use the language of correspondence within experience, “empirical truth” will always be limited by the formative requirements set by “transcendental truth.” The difficulty, for Kant, is the role played by sensuous content since the sameness of this content in intersubjective experience seems (...) to point outside the conditions of synthesis to a transcendentally real object. While the consequence of this would seem to leave Kant in a contradiction—denying transcendental realism at the same time that he must affirm it—we must read Kant’s insistence on a merely negative use of noumena as evidence that he adopts the role of the skeptic as a means for maintaining his epistemic goals. (shrink)

Abstract: My aim is to reconstruct Kant's argument for the principle of the synthetic unity of apperception. I reconstruct Kant's argument in stages, first showing why thinking should be conceived as an activity of synthesis (as opposed to attention), and then showing why the unity or coherence of a subject's representations should depend upon an a priori synthesis. The guiding thread of my account is Kant's conception of enlightenment: as I suggest, the philosophy of mind advanced in the Deduction belongs (...) to an enlightenment epistemology. Kant's conception of enlightenment turns on the requirement that a subject be able to recognize herself as the source of her cognitions. The argument for the apperception principle is reconstructed under the guidance of this conception of the ideal of enlightenment. (shrink)

The consensus view in the literature is that, according to Kant, definitions in philosophy are impossible. While this is true prior to the advent of transcendental philosophy, I argue that with Kant's Copernican Turn definitions of some philosophical concepts, the categories, become possible. Along the way I discuss issues like why Kant introduces the ‘Analytic of Concepts’ as an analysis of the understanding, how this faculty, as the faculty for judging, provides the principle for the complete exhibition of the categories, (...) how the pure categories relate to the schematized categories, and how the latter can be used on empirical objects. (shrink)

This is a précis of my book Kant's Radical Subjectivism, to be published as part of a symposium dedicated to the book, with critics Hein van den Berg, Karin de Boer, Henny Blomme en Joris Spigt, including a reply by me. The symposium is in Dutch, but the pre-print uploaded here is in English!

Inspired by Kant, Merleau-Ponty and Sellars, I illustrate and identify certain kinds of unity which are typical (if not universal) features of our conscious experience, and argue that Kant was right to claim that such unities are produced by unconscious processes of synthesis: A perceptual experience of succession is not reducible to a succession of perceptual experiences. The experience of perceiving one object as having several features is not reducible to a conjunction of perceptual experiences of those features. A cross-modal (...) perceptual experience is not reducible to a conjunction of single-modality perceptual experiences. Incoming perceptual information is synthesized into a single scene-a representation of the world as perceived from a spatio-temporal point of view. Any two of the simultaneous features of the experience of a subject S can be thought of together by S. Many of the experiences of a subject S can be thought of by S at a later time as part of his or her history of experience. These can be summarized in the general principle: An experience of a complex is not a complex of experiences. This is consistent with Sellars’ principle that: A sense-impression of a complex is a complex of impressions because the latter applies at the sub-personal, unconceptualized level, and the former at the conscious level of conceptualized experiences. (shrink)