Berkeley on Perception

George Berkeley (1685-1753) is most famous for his provocative claim that material objects don’t really exist. Positively, he claimed that “to be is to be perceived”. Berkeley took as a starting point the view of Descartes and Locke that perceptions are “ideas” in the mind, but took issue with the further assumption of Descartes and Locke that ideas nonetheless also “represent” things that exist independent of the mind. It seems to me that the implicit concept of mind in this kind of usage assumes way too much, but for now I won’t dwell on that.

Berkeley has been the subject of superficial ridicule as a poster child for extreme subjectivism, but that is a caricature. Famously, he is supposed to have maintained, e.g., that a tree falling in the woods and heard by no one makes no sound. As 20th century analytic philosophers have noted, however, even if his positions are ultimately untenable, the quality of his arguments is actually quite high. Apart from the abstract “metaphysical” question of the actual existence of external objects, he also generally wanted to vindicate common sense.

Far from denying the existence of any objective reality, what he really wanted to do was articulate an alternate account of objectivity, based on something other than the independent existence of discrete objects. He had two different kinds of responses on the falling tree. One invokes counterfactual conditions; all that is of practical relevance to us are the conditions under which a perception would occur. The other invokes God as a universal witness.

From within the tradition of British empiricism, Berkeley partially anticipates the non-representationalist accounts of objectivity developed by Kant and Hegel, using the resources of a kind of Christian Platonism. Unlike Kant and Hegel, he flatly asserts that what really exists are what he calls spirits, which combine Christian-Platonic attributes with those of minds in a broadly Cartesian-Lockean sense.

A bit like the monads of Leibniz but without the infinite nesting and mutual inclusion Leibniz posited, Berkeley’s spirits are inherently active, and inherently endowed with perception. Spirits have experience that is expressed in purely immanent and immediate — but entirely passive and inert — contentful ideas.

Berkeley wrote an important early work on the theory of vision, arguing that what we really see is immediate phenomena of light and color, rather than inferred “things”. This was an important source for phenomenalism in early 20th century philosophy of science. Like the later phenomenalists, he tried to explain all cognitive error as bad inference from good immediate perception. From this point of view, “ideas” cannot be wrong, because they are purely immediate and purely inert; the possibility of error depends on the actions of finite spirits.

The common tradition of Cartesianism and British empiricism insists that there is a layer of immediate apprehension that is immune to error, and wants to ground knowledge and science by more authentically getting back to that immediate layer. I think Kant and Hegel convincingly showed that everything we experience as immediate actually has a prehistory, so that immediacy itself is only an appearance, and all immediacy that we experience is really what Hegel called mediated immediacy. Mediated immediacy has the same general kind of explanation as what is called “habit” in translations of Aristotle. We “just know” how to ride a bicycle once we have already learned. We don’t have to think about it; we just spontaneously do it. Similarly, I think “immediate” perception involves a complex unconscious application of categories that is affected by large bodies of previous experience.

Thus I want to say that there is no layer of human experience that is immune to error. On the other hand, through reflection and well-rounded judgment, we genuinely but fallibly participate in objectivity. Objectivity is not something that is simply “out there”; it is a real but always finite and relative achievement.

Three Kinds of Knowledge

Spinoza identifies three kinds of “knowledge”.

“From what has been said above, it is clear that we perceive many things and form universal notions:”

“I. from singular things which have been represented to us through the senses in a way that is mutilated, confused, and without order for the intellect…; for that reason I have been accustomed to call such perceptions knowledge from random experience;”

“II. from signs, e.g., from the fact that, having heard or read certain words, we recollect things, and form certain ideas of them, which are like them, and through which we imagine the things…. These two ways of regarding things I shall henceforth call knowledge of the first kind, opinion or imagination.”

“III. Finally, from the fact that we have common notions and adequate ideas of the properties of things…. This I shall call reason and the second kind of knowledge.”

“[IV.] In addition to these two kinds of knowledge, there is another, third kind, which we shall call intuitive knowledge. And this kind of knowing proceeds from an adequate idea of the formal essence of certain attributes of God to the adequate knowledge of the… essence of things” (Ethics, book 2, proposition 40, scholium 2, Collected Works vol. 1, Curley trans., pp. 477-478).

The first kind is the source of the confusion addressed in the last post. It elaborates on Plato’s account of “mere opinion”. An important detail is Spinoza’s explicit reference to the fact that inadequate “universal” notions are commonly formed based on inadequate ideas from perception and imagination. Formal logic can then be mechanically applied to these inadequate universals, yielding conclusions that are formally logically sound but deeply wrong materially or content-wise when applied to the real world. We’ve all seen this happen.

The second kind, which he calls “reason”, is thus distinguished not by its use of logic but by the kind of contents it addresses: common notions and adequate ideas. For Spinoza, “reasoning” that takes mere images and opinions as unproblematic sources of truth does not deserve the name of Reason.

“Common notions” is Spinoza’s preferred term for principles that are recognized by all humans and are “equally present in the part and the whole”. What exactly these are intended to include is somewhat obscure. His main example of common notions involves simple mathematical properties of bodies, which are “common” due to the presumed objectivity of mathematics, rather than any sort of intersubjectivity or mutual recognition.

“Adequacy” of ideas is an entirely internal criterion — basically a kind of coherence of meaning, rather than a correspondence with something external that is presumed to be independently known. Ideas for Spinoza are things we affirm or deny, so they have internal complexity. Adequacy of ideas seems to be entirely independent of his criteria for common notions, which is good because I worry about the narrowness of the latter.

I read the third kind — “intuition” — as presupposing and building on the discipline of the second. It is not a free-for-all. This is a “cumulative” rather than “originary” intuition. What other authors claim as originary intuition (alleged “self-evident truths” coming from nowhere) would for Spinoza be mere opinion or imagination.

He says that the first kind of knowledge is the only source of falsity, which implies that the results of the second and third kind are always true. While it is clear that the first kind is a source of falsity, to say that reason and “intuition” yield only truth sets a very high standard indeed. He does not seem to acknowledge the difficulty of knowing there is no admixture of the highly fallible first kind in what we may take to be the infallible second or third kind, or in general the difficulty of practically achieving the extremely high standards he sets for the second and third kind.

This whole discussion proceeds very hastily. There is a bit more than I have quoted, but only a bit. His account of the first kind of knowledge and its weaknesses is relatively more extended, and quite vivid and insightful. But the account of the second kind is very sketchy, and the account of the third kind even more so.

Perhaps we are intended to see the whole text of the Ethics as an illustration of how the second and third kind work. But if it purely embodies the infallible second and third kinds of knowledge, then it would seem that all serious philosophers ought to unequivocally endorse all its arguments, or else they won’t qualify as serious. Strictly speaking, does Spinoza’s standpoint even allow him to acknowledge another philosopher as serious who does not endorse all his arguments? Honestly I did not expect to write the previous sentence.

While Spinoza does not seem to me to be what Kant would call a dogmatist in the sense of taking objects for granted, there is a sense in which he does seem to say, “here is my system, take it or leave it”. I’m still not sure what I think of Hegel’s claim that no finite presentation can ever be truly final, but relatively speaking I’m more comfortable with that. I want to say it is actually a principle of charitable reading to at least in some measure tolerate excessive claims a work may make on its own behalf, and focus instead on understanding the content.

Hegelian Finitude

Hegel has usually been considered to be anything but a thinker of finitude. However, the two previous philosophers to whom he devoted the most pages — Aristotle and Kant — are in their own very different ways perhaps the two most emblematic philosophers of finitude. If we start with Hegel’s ethics rather than his supposed metaphysics of Geist as a sort of divine immanence and his supposed doctrine of “absolute knowledge”, a deep resonance between his thought and Aristotle and Kant’s themes of finitude becomes evident.

Hegel is in fact extremely concerned to point out that we are not masters in life, and that error is inevitable. Further, more so than Kant — and arguably even more than Aristotle — he puts an overtly positive, optimistic face on this finite condition.

In his logical works, Hegel distinguished between a “good” and a “bad” infinity. Similarly, it could be said that he implicitly makes a very sharp distinction between “good” and “bad” finitude. Bad finitude is associated with what he called the Unhappy Consciousness. With the advent of monotheism in the West, one common extreme view held that before the infinity of God, we and all finite beings are as nothing. In this view, finite being is a mainly a burden to be overcome in the hereafter, and has no intrinsic value of its own.

“Good” finitude is what emerges from Hegel’s own view. As completely as Nietzsche but in a more balanced way, Hegel rejected the idea of finitude as a burden. For Hegel, finitude is an opportunity, not a curse. Error is an invitation to learning, and non-mastery is the path to reality. (See also Brandom on Postmodernity; Back to Ethical Being; Infinity, Finitude; Respect for All Beings; Affirmation; Truth, Beauty; Secondary Causes).

Hegelian Semantics

Brandom begins his second Brentano lecture saying, “On the ground floor of Hegel’s intellectual edifice stands his non-psychological conception of the conceptual. This is the idea that to be conceptually contentful is to stand in relations of material incompatibility and consequence (his “determinate negation” and “mediation”) to other such contentful items. The relations of incompatibility and consequence are denominated “material” to indicate that they articulate the contents rather than form of what stands in those relations. This is his first and most basic semantic idea: an understanding of conceptual content in terms of modally robust relations of exclusion and inclusion” (p. 39).

I think Aristotle and even Plato would have agreed with all of this: both the nonpsychological nature of concepts and the fundamental role of modally robust relations of exclusion and inclusion in determining meaning. But the Latin medieval to European early modern mainstream was in this regard much more influenced by the Stoic explanation of meaning by representation, and by the “psychological” cast of Augustine’s thought.

Brandom goes on to characterize Hegel’s position as a “bimodal hylomorphic conceptual realism”, carefully unpacking each part of this dense formula. The two modalities in question are the two fundamental ways in which things have grip on us: the “bite” of reality and the moral “ought”. Brandom holds that there is a deep structural parallel or isomorphism between these two kinds of constraints that affect us. Further, the isomorphism is also a hylomorphism in the sense that the two modalities are not only structurally similar, but so deeply intertwined in practice as to be only analytically distinguishable. Concepts and normativity are interdependent. Finally, it is through concepts and normativity that all our notions of the solidity of reality are articulated.

This kind of conceptual realism in Hegel is complemented by what Brandom calls a conceptual idealism. “At the grossest level of structure, the objective realm of being is articulated by nomological relations, and the subjective realm of thought is articulated by norm-governed processes, activities or practices. It can be asked how things stand with the intentional nexus between these realms. Should it be construed in relational or practical-processual terms?” (p. 43). “Hegel takes there to be an explanatory asymmetry in that the semantic relations between those discursive practices and the objective relations they know about and exploit practically are instituted by the discursive practices that both articulate the subjective realm of thought and establish its relations to the objective realm of being. This asymmetry claim privileging specifically recollective discursive practices over semantic relations in understanding the intentional nexus between subjectivity and objectivity is the thesis of conceptual idealism.” (p. 44).

Plato had talked about recollection in a mythical or poetic way in relation to paradoxes of learning. Hegel’s more “historiographical” recollection is also related to a kind of learning, but Hegel specifically stresses the importance of error as the stimulus to learning. Brandom says there is both a “subjunctive sensitivity of thought to things” (ibid) and a “normative responsibility of thought to fact. What things are for consciousness ought to conform to what things are in themselves.” (p. 45). This translates into a central obligation to repair our errors, and for Hegel the specific way to do this is through a recollective account of what was right in our previous stance; how we came to realize that it went wrong; and what we did to fix it.

“The normative standard of success of intentional agency is set by how things objectively are after an action. The idea of action includes a background structural commitment to the effect that things ought to be as they are intended to be. Conceptual idealism focuses on the fact that all these alethic and normative modal relations are instituted by the recollective activity that is the final phase of the cycle of cognition and action” (ibid).

“Conceptual realism asserts the identity of conceptual content between facts and thoughts of those facts. (Compare Wittgenstein: ‘When we say, and mean, that such-and-such is the case, we—and our meaning—do not stop anywhere short of the fact; but we mean: this—is—so.’ [PI§95]) Conceptual idealism offers a pragmatic account of the practical process by which that semantic-intentional relation between what things are for consciousness and what they are in themselves is established. Pragmatics, as I am using the term, is the study of the use of concepts by subjects engaging in discursive practices. Conceptual idealism asserts a distinctive kind of explanatory priority (a kind of authority) of pragmatics over semantics. For this reason it is a pragmatist semantic explanatory strategy, and its idealism is a pragmatist idealism. The sui generis rational practical activity given pride of explanatory place by this sort of pragmatism is recollection” (pp. 45-46).

Brandom says that Hegel’s notion of experience has two levels, corresponding to two top-level kinds of concepts he distinguishes: ordinary practical and empirical concepts, and meta-level philosophical, categorial or “logical” concepts.

“The master-strategy animating this reading of Hegel (and of Kant) is semantic descent: the idea that the ultimate point of studying these metaconcepts is what their use can teach us about the semantic contentfulness of ground-level concepts, so the best way to understand the categorial metaconcepts is to use them to talk about the use and content of ordinary concepts… The pragmatic metaconcept of the process of experience is first put in play in the Introduction, at the very beginning of [Hegel’s Phenomenology], in the form of the experience of error. It is invoked to explain how the consciousness-constitutive distinction-and-relation between what things are for consciousness and what things are in themselves shows up to consciousness itself. Hegel assumes that, however vaguely understood it might be at the outset, it is a distinction-and-relation that can at least be a topic for us, the readers of the book” (pp. 47-48).

The most naive human awareness already implicitly recognizes a distinction between appearance and reality. “The question is how this crucial distinction already shows up practically for even the most metatheoretically naïve knowing subject. How are we to understand the basic fact that ‘…the difference between the in-itself and the for-itself is already present in the very fact that consciousness knows an object at all’… Hegel traces its origin to the experience of error” (p. 48).

“Hegel finds the roots of this sort of experience in our biological nature as desiring beings…. What a creature practically takes or treats as food, by eating it, can turn out not really to be food, if eating it does not satisfy the hunger that motivated it…. This sort of experience is the basis and practical form of learning” (p. 49). This is “the practical basis for the semantic distinction between representings and representeds, sense and referent” (pp, 49-50).

“[A]n essential part of the acknowledgment of error is practically taking or treating two commitments as incompatible. Such genuinely conceptual activity goes beyond what merely desiring beings engage in. The origins of Hegel’s idea here lie in Kant’s earlier broadly pragmatist account of what knowing subjects must do in order to count as apperceiving” (p. 50).

“Hegel breaks from the Kantian picture by adding a crucial constraint on what counts as successful repairs…. Successful repairs must explain and justify the changes made, in a special way” (p. 52). This takes the form of a historical recollection. “To be entitled to claim that things are as one now takes them to be, one must show how one found out that they are so. Doing that involves explaining what one’s earlier views got right, what they got wrong, and why…. This is the progressive emergence into explicitness, the ever more adequate expression, of what is retrospectively discerned as having been all along implicit as the norm governing and guiding the process by which its appearances arise and pass away” (p. 53). “Recollection… turns a past into a history” (p. 54).

All this serves as an explanation of how we come to have representations that actually refer to something, in terms of how we express our concerns. “In general Hegel thinks we can only understand what is implicit in terms of the expressive process by which it is made explicit. That is a recollective process. The underlying reality is construed as implicit in the sense of being a norm that all along governed the process of its gradual emergence into explicitness” (p. 56).

“Kant had the idea that representation is a normative concept. Something counts as a representing in virtue of being responsible to something else, which counts as represented by it in virtue of exercising authority over the representing by serving as a standard for assessments of its correctness as a representing. It is in precisely this sense that a recollective story treats the commitments it surveys as representings of the content currently treated as factual” (p. 58). Brandom says that Hegel reconstructs in expressive terms what the representationalists were right about, while strongly contrasting this way of thinking with representationalism.

“Hylomorphic conceptual realism then underwrites the idea of the categorial homogeneity of senses as graspable thoughts and their referents (what they represent) as correspondingly conceptually contentful, statable facts. This makes intelligible the idea that thoughts are the explicit expressions of facts. They make explicit… how the world is” (p. 60).

“The plight of finite knowing and acting subjects metaphysically guarantees liability to empirical error and practical failure. The experience of error is inescapable. What I earlier called the ‘false starts, wrong turns, and dead ends’ of inquiry can be retrospectively edited out of the sanitized, Whiggish vindicating recollective narrative, but they cannot be avoided going forward.

“Why not? In short because the rational, conceptual character of the world and its stubborn recalcitrance to mastery by knowledge and agency are equally fundamental primordial features of the way things are” (pp. 61-62).

“For Hegel, the experience of error requires not just the revision of beliefs… but also of meanings” (p. 62). “The manifestation of stubborn, residual immediacy in thought is the inevitability of the experience of error…. [T]he ineluctability of error and the realistic possibility of genuine knowledge [both] express valid perspectives on what is always at once both the experience of error and the way of truth. The important thing is not to seize exclusively—and so one-sidedly—on either aspect, but to understand the nature of the process as one that necessarily shows up from both perspectives” (p. 63).

“One of Hegel’s animating ideas is that the independence of immediacy (its distinctive authority over structures of mediation) is manifested in its role as a principle of instability, as providing a normative demand for change, for both rejection and further development of each constellation of determinate concepts and commitments articulated by them. The independence of mediation (its distinctive authority over immediacy) is manifested in all the retrospective recollective vindications of prior constellations of commitments as genuine knowledge, as resulting from the expressively progressive revelation of reality by prior claims to knowledge.” (pp. 64-65).

“The forward-looking obligation to repair acknowledged incompatibilities of commitment acknowledges error and the inadequacy of its conceptions. The backward-looking recollective obligation to rationalize as expressively progressive previous, now superseded, repairs and recollections institutes knowledge, truth, and determinate concepts whose incompatibilities and consequences track those articulating (in a different modal key) the objective world…. The recollective process is also what Hegel calls ‘giving contingency the form of necessity.'” (p. 65).

“The key in each case is to understand [truth and error] not as properties, states, or relations that can be instantiated at a single time, but as structural features of enduring experiential processes” (p.66).

This is to move from what Hegel calls Understanding to what he calls Reason. Understanding focuses on the fixity of concepts; Reason also has regard for their malleability. To think of experience as asymptotically approaching objective facts and relations belongs to the Understanding that disregards the mutation of meanings.

“The world as it is in itself as distinct from how it is for consciousness is not a brute other, but in that distinctive sense the product of its own recollective activity in experience” (p.72).

Broken Synthesis

It is mainly Kant who is the thinker of synthesis. For Kant, synthesis is partly a moral ideal, and partly something we are always already caught up in, and need to deconstruct.

The Žižekians are right that Hegel specialized in pointing out how Kantian syntheses break. I’ve written at greater length about my own Brandomian take on this latter point under Error.

So-called absolute knowledge is actually a deconstruction, not a synthesis.

Negativity in Experience

A first collection of critical responses to Brandom’s landmark work on Hegel has recently appeared (Reading Brandom: On A Spirit of Trust, Routledge 2020). Leading Hegel scholar Robert Pippin’s contribution takes issue with Brandom’s methodology of “semantic descent”, and argues that Brandom’s account of negation in Hegel is incomplete.

While Kant and Hegel both focused most of their explicit philosophical attention on very high-level concepts that help explain the meaning of other concepts, I think they nonetheless intended their thought to have practical relevance to life. (Pippin himself wrote a book I cannot recommend too highly, Hegel’s Practical Philosophy.) Brandom goes a step further than Kant and Hegel did, and explicitly claims that the same kinds of considerations they found relevant to the interpretation of what he calls expressive metaconcepts are always already involved in kinds of questions that a philosophically inclined person can see as implicitly arising in ordinary life. I find this thesis of the rich philosophical import of interpretations in ordinary life very appealing, and take it as expansive rather than reductive in intent.

Pippin quotes Brandom to this effect, but somehow still seems to think there is a reduction involved in Brandom’s semantic descent. In a related move, Pippin first commends Brandom’s analysis of Hegelian negation in terms of material inference and modality, but then goes on to argue that this still only addresses the concerns of the first of three parts of Hegel’s Logic — what Hegel called a logic of being, as distinguished from a logic of essence or a logic of the concept.

Very schematically, for Hegel, a logic of being addresses facts about presumed existing things, in this way resembling the approach of standard contemporary formal logic. This turns out to presuppose a logic of essence, which is concerned with higher-level judgments about the natures or ways of being of things, like the inquiries of Plato and Aristotle. This in turn implicitly presupposes a logic of the concept, which leads from something like Kantian synthesis to Hegel’s so-called “Absolute” as a sort of ultimate horizon, under which the context-dependence of the most objectively valid particular determinations is to eventually become explicit.

I think that Brandom’s modal realism already involves what Hegel would call a logic of essence, and that Brandom’s notions of forgiveness, magnanimity, and truth-as-process operate at the level of what Hegel would call a logic of the concept.

Part of the significance of modal realism is as a grounding for concepts of natural law employed by modern science, which do still belong to what Hegel would call a logic of being, as Pippin says. But for Brandom, modal realism also plays the even more important role of grounding Kantian moral necessity. Brandom does not use the term “essence” in his semantics, but I would say that judgments of Kantian moral necessity are concerned with essence rather than mere fact. While it is not quite the same thing, I also think that in a Hegelian context, they belong on the level of a logic of essence.

Whereas I have worried a little about passages in Brandom that exclusively associate truth with truth-as-process — which seems to me not to give enough weight to the positive value Hegel recognized in Understanding, alongside his famous criticism of its limitations — Pippin has an opposite worry, that Brandom ends up reducing Hegelian Reason to Understanding.

Pippin seems to construe what Brandom refers to as “ground-level empirical concepts” in an overly narrow way. Pippin glosses these as “cases of, largely, matters of fact known empirically”, and then refers to “empirical discovery” as the “engine generating incompatible commitments”. While he quotes Brandom’s reference to “ground-level empirical and practical concepts” [emphasis added], he ignores the “practical” part of Brandom’s formula, which presumably refers to concepts used in concrete ethical judgments. It is true that Brandom uses “red” as his canonical example of a ground-level empirical concept, but I think this choice is only meant to provide opportunities to point out the already inferential character of the use of such an apparently simple perceptual term, rather than in any way to undo his explicit inclusion of ground-level practical concepts.

Surprisingly, Pippin also seems to blur together talk about Kantian empirical concepts; talk about Kantian empirical intuition, to which Brandom attributes a key “negative” role providing occasions for recognition of error; and talk about matters of empirical fact. This results in what I think is an unfair characterization of Brandom’s interpretation as reducing Hegelian good negativity to matters of empirical discovery, external to Reason.

To say, as Brandom effectively does, that the main role of the element of immediacy or Kantian intuition in experience is “negative” rather than “positive”, while also in a different context saying that ground-level empirical and practical concepts always already involve the kinds of complexity and nuance associated with expressive metaconcepts, does not imply that Brandom’s strategy of semantic descent reduces Hegelian negativity to anything empirical. I strongly believe that for Brandom, critical thought and dialogue provide additional sources for the good kind of “negativity” of Reason that Hegel thematized in contrast to the “positivity” of things merely taken as given.

Pippin wants to emphasize that Hegelian negativity is an internal feature of Hegelian Reason, not something that comes to it only from an external empirical source. So far, I agree, and I think Brandom would as well. But then, to my surprise, Pippin seems to take up an old-school, very literal reading of Hegel’s metonymies of logical “motion” and an associated “life” of the negative. To me, the better reading is to take these rather obvious metonymies as metonymies. Logic in itself does not move, and negativity in itself is not a form of life. It is we who move and are alive. (Who we are is another complicated story; see under Subjectivity in the menu.)


Brandom and Brandom’s Hegel highlight the centrality of the experience of error in any learning process. In section VI of the Conclusion to Spirit of Trust, he says this is “because the rational, conceptual character of the world and its stubborn recalcitrance to mastery and agency are equally fundamental, primordial features of the way things are”. This simple double-edged insight, I would argue, has been approached by many, possibly as far back as Plato. I have wanted to affirm both theses since childhood, without ever being quite satisfied with the level of inter-articulation achieved. Most authors are better in their treatment of one side of this than the other. I think Brandom has shed unprecedented light on how the bases of these contrasting insights are not only compossible, but actually interdependent.

Mastery as a model of rationality turns out to be a non-starter. Mastery turns out to be an anti-model of rationality, not the thing that putatively shows where rationality goes wrong. The pragmatic workings of rationality through the experience of error — analyzed by Brandom in fine detail — are in fact radically opposed to Mastery. Not only beliefs but the understood meanings of determinate empirical concepts have an intrinsic instability that cannot be reduced away. Rationality has to do in large part with a responsiveness to this instability — how we recognize our own conceptual errors and respond to them.

Many have written eloquently but ultimately onesidedly about the rationality of the world OR the failure and badness of Mastery or some analogue of it, without adequately developing the deep connection between these two. Brandom has performed a world-historic service to humanity in showing a way beyond this impasse.

Brandom says that for Hegel, there is and could be no set of determinate empirical concepts that when correctly applied would not eventually generate incompatible commitments in some new situation. Brute immediacy gives rise to noninferential perceptual commitments that cannot be integrated into our previous best schema.

This is how immediacy has an irreducible role in experience — not as some foundational guarantee of mastery, but quite the opposite, as a sort of surplus ensuring the inevitability of eventual error from the most impeccable procedure, and hence of a need to perennially revise our commitments and possibly our concepts. As the disparity between subjective and objective forms of conceptual content, it is a principle of instability providing a normative demand for change. As Hegel puts it, the evanescent itself must be regarded as essential. This is the way Hegel recovers a role for something like Kantian sensibility or intuition as a complement to the conceptual.

As Brandom says, this requires reconceptualizing both truth and determinateness. Truth can no longer be simply thought of as a prospective goal (as if it were determined beforehand, entirely independent of our process of seeking it), because any fully determinate prospective goal will eventually be invalidated. One of Hegel’s great original thoughts is that genuine, deeper truth will not stay still, as it were. The principal locus of truth shifts to a truth-process.