Reality-Mode Ontology: A Multi-Scale, Multi-Modal Relational Framework of Universals and Particulars

Reality-Mode Ontology Page 1 Reality-Mode Ontology: A Multi-Scale, Multi-Modal Relational Framework of Universals and Particulars David Matta American University of Beirut / Lebanese Mindfulness Association https://doi.org/10.5281/zenodo.17809471 Abstract This paper develops a unified metaphysical-cognitive framework that reconceives universals and particulars as scale-relative, contrast-generated, and mode-dependent structures. Against both nominalism and Platonism, I argue that particulars depend on universals for intelligibility, universals depend on particulars for recognition, and both depend on contrast relations. Universals emerge as structural invariants across contrastive clusters of particulars, and at higher scales they themselves function as particulars, generating an indefinitely nested ontology. I introduce the novel concept of Reality-Mode Perception (RMP): the thesis that human cognition does not perceive objects as they exist across their full modal range, but only the mode of reality accessible through our sensory-cognitive apparatus. Redness, for example, is a mode-specific universal derived from our visual system, not the underlying wavelength structure; similarly, 'water' is a mode-unified universal compressing multiple physical states (ice, liquid, vapor). Integrating RMP with predictive processing (Friston, 2010; Clark, 2016), coarse-graining (Wimsatt, 2007), and categorization research (Rosch, 1978), I argue that the universal-particular binary is a genuine cognitive limitation arising from our restricted access to the modal structure of reality. The result is a Reality-Mode Ontology: a relational, scale-relative, and mode-relative metaphysics that integrates phenomenology, analytic metaphysics, structural realism, and cognitive science into a coherent account of intelligibility. Keywords: universals, particulars, reality-mode perception, predictive processing, phenomenology, structural realism, cognitive constraints, scale-relativity, mode-relativity, structural hierarchy Reality-Mode Ontology Page 2 1. Introduction The metaphysics of universals and particulars has dominated philosophical inquiry since antiquity. The classical positions—nominalism, conceptualism, Aristotelian moderate realism, and Platonic realism—attempt to explain what universals are, whether they exist independently of the mind, and how they relate to particular things. Yet each approach faces deep difficulties: nominalism cannot individuate particulars without implicit universals, and Platonism cannot account for our knowledge of universals that never appear in isolation (Loux, 2017; Armstrong, 1978). Recent advances in cognitive science—specifically predictive processing (Clark, 2013; Friston, 2010) and hierarchical generative models (Rao & Ballard, 1999)—provide new resources for reconceptualizing these ancient issues. This paper argues that the problem of universals has remained intractable partly because it has been framed without adequate attention to (a) the scale-dependent nature of ontological classification, (b) the role of contrast in generating intelligibility, and (c) the modal constraints imposed by human perceptual and cognitive architecture. This paper introduces a new framework based on five core theses: Ontological Dependence: Particulars depend on universals for intelligibility (Aristotle, 1984; Armstrong, 1978; Lowe, 2006). Epistemic Dependence: Universals depend on particulars for recognition (Husserl, 1983; Rosch, 1978). Contrast Dependence: Particulars depend on contrast with other particulars (MerleauPonty, 2012; Wimsatt, 2007). Scale-Relativity: Universals become particulars at higher levels in an indefinitely nested hierarchy (Ladyman & Ross, 2007; Simon, 1962). Mode-Relativity (RMP): We perceive a mode of reality, not the full modal range of objects; thus universals and particulars are constrained by our sensory-cognitive mode. These theses generate a continuous, nested, scale-relative, and mode-relative metaphysics wherein universals and particulars are exchangeable positions depending on resolution and context. When integrated with cognitive science—predictive processing, coarse-graining, and Reality-Mode Ontology Page 3 abstraction—the framework explains why humans perceive sharp ontological boundaries where none exist. 2. Terminology and Conceptual Innovations Philosophical progress often depends on the introduction of new distinctions, new technical terms, and new conceptual tools that refine or revise our understanding of reality. This paper introduces one such innovation—the concept of Reality-Mode Perception (RMP)—and from this concept develops the broader metaphysical framework I call Reality-Mode Ontology. This section clarifies the terminology and emphasizes the originality of the conceptual architecture. 2.1 Reality-Mode Perception (RMP): Definition and Scope The central conceptual innovation of this paper is the term Reality-Mode Perception (RMP). I define RMP as follows: Reality-Mode Perception (RMP) is the thesis that human cognition does not access objects in their full modal structure, but only the mode of reality that becomes available through the constraints of our sensory-neural-cognitive apparatus. We perceive a mode of reality, not the modes of the objects themselves. RMP is a newly coined term. It has no direct equivalent in classical metaphysics, phenomenology, cognitive science, or philosophy of perception. Although related to themes in Kant's notion of appearance (Kant, 1998), Husserl's intentionality (Husserl, 1983), MerleauPonty's style of perception (Merleau-Ponty, 2012), and Gibson's affordances (Gibson, 1979), RMP differs fundamentally in several respects that require careful articulation. 2.1.1 Distinguishing RMP from Kantian Appearance Kant's distinction between phenomena (appearances) and noumena (things-in-themselves) concerns the epistemological accessibility of objects structured by the forms of sensibility and categories of understanding (Kant, 1998). Kantian appearance is constituted by the transcendental subject; it is epistemologically constrained but ontologically unified in the sense that all human cognizers share the same transcendental structure. RMP, by contrast, concerns the modal architecture of reality itself as filtered by specific sensory channels. RMP does not posit a single, unified 'phenomenal realm' but multiple possible modes of access, each revealing different structural aspects of the same object. Where Kant's framework is transcendental and a priori, RMP is empirical and pluralistic: different Reality-Mode Ontology Page 4 sensory systems access different modes, and these modes are not reducible to a single transcendental schema. Furthermore, RMP does not entail skepticism about the real—it claims that each mode reveals genuine structural features of reality, not mere subjective constructs. 2.1.2 Distinguishing RMP from Husserlian Noema Husserl's noema refers to the intentional content of consciousness—the 'object as meant' through various acts (Husserl, 1983). Noematic variation describes how the same object can be given through different noematic profiles (perspectives, aspects, temporal phases). However, Husserlian phenomenology remains within the domain of intentional analysis; it describes how objects are constituted in consciousness without making direct ontological claims about the modal structure of external reality. RMP goes beyond noematic description by making an ontological claim: objects possess multiple modal structures (electromagnetic, thermodynamic, chemical, vibrational), and human perception accesses only a subset of these. The limitation is not merely perspectival or intentional but arises from the sensory-cognitive architecture that filters reality into specific modal channels. RMP is thus both phenomenological and naturalistic: it respects first-person experiential structure while grounding it in the empirical facts of perceptual neuroscience. 2.1.3 Distinguishing RMP from Gibsonian Affordances Gibson's ecological psychology proposes that perception directly picks up affordances—action possibilities specified in the ambient array (Gibson, 1979). Affordances are relational properties between organism and environment, emphasizing what the environment 'offers' for action. RMP shares with Gibson an emphasis on the relational character of perception, but differs in focus and scope. Gibson's affordances concern action-relevant properties; RMP concerns the modal structure of objects across all sensory and cognitive dimensions, including those irrelevant to immediate action. Additionally, RMP incorporates the predictive processing framework (Clark, 2013), which explains perception as inference under uncertainty—a mechanism absent in classical ecological psychology. RMP is thus compatible with but more comprehensive than affordance theory. 2.2 The Ontological Status of Modes: Against Subjectivism A critical question arises: What exactly is a 'mode'? Is it a perceptual channel, a cognitive filter, an ontological layer, or a representational format? And if modes are defined by accessibility to Reality-Mode Ontology Page 5 a receiver, does this not collapse into subjectivism? This section provides a precise answer and defends the objective reality of modes. A mode, in the technical sense employed here, is a structured domain of properties that can be accessed by a particular type of sensory-cognitive system. Crucially, modes are ontologically real—they are genuine aspects of objects—but they are also relational in the sense that access to them depends on the detecting apparatus. 2.2.1 The Objectivity of Modes: A Structural Realist Defense The risk of subjectivism arises if we define modes purely in terms of what a subject experiences. However, RMP does not define modes subjectively. Rather, modes are objective structural domains whose existence is independent of any particular observer, even though access to them is observer-relative. Consider the electromagnetic spectrum. The spectrum exists objectively: photons of various wavelengths propagate through space regardless of whether any organism perceives them. The 'visible light' mode (wavelengths ~380-700nm) is an objective subset of this spectrum—it exists as a structured domain of electromagnetic radiation. What is observer-relative is access: human photoreceptors respond to this range, while bee photoreceptors extend into ultraviolet, and pit vipers detect infrared. This understanding aligns with structural realism (Ladyman & Ross, 2007; French, 2014), which holds that what science describes is the relational structure of reality rather than intrinsic, unobservable properties. Modes are structural domains: they are real features of the world that become manifest through appropriate detecting relations. The structure exists independently; the access is relational. An analogy clarifies this point. A radio receiver tuned to FM 101.5 MHz accesses a specific frequency band. The radio waves at that frequency exist objectively—they propagate regardless of whether any receiver is tuned to them. The receiver does not 'create' the signal; it accesses a pre-existing structural domain. Similarly, human vision does not 'create' visible light; it accesses an objective modal domain of electromagnetic structure. The mode is real; the access is perspectival. 2.2.2 The Convergence Argument for Modal Objectivity A further argument for the objectivity of modes comes from inter-modal and inter-observer convergence. If modes were purely subjective, we would expect idiosyncratic variation without Reality-Mode Ontology Page 6 constraint. But we find the opposite: all normally-sighted humans perceive the same color categories (with minor individual variation); instruments calibrated independently converge on the same measurements; different sensory modalities (vision, touch) converge on consistent object properties. This convergence is inexplicable if modes are subjective constructs. It is readily explained if modes are objective structural domains that constrain what any appropriately configured detector can access. The objectivity of modes is thus empirically supported, not merely postulated. 2.3 Reality-Mode Ontology: The Framework From Reality-Mode Perception follows a broader metaphysical system: Reality-Mode Ontology. This is not a second coined term but the theoretical architecture built from RMP. Reality-Mode Ontology is a multi-scale, multi-modal metaphysical framework that reconceives universals and particulars as mode-relative, scale-relative, and contrastgenerated structures constrained by the modal access of human cognition. Reality-Mode Ontology does not introduce additional primitive terms; rather, it names the theoretical system whose foundation is RMP. This mirrors standard philosophical practice, where a newly coined term supports a full metaphysical structure: Leibniz's 'monads' yield monadology; Dennett's 'intentional stance' yields intentional systems theory; Ladyman and Ross's 'ontic structures' yield ontic structural realism. By analogy: Reality-Mode Perception (coined concept) yields Reality-Mode Ontology (framework). Reality-Mode Ontology Page 7 3. Against Nominalism Nominalism holds that only particular things exist, while universals are merely names, labels, or linguistic conveniences. The major forms of nominalism—predicate nominalism, resemblance nominalism, class nominalism, and trope theory—each attempt to eliminate universals from ontology (Armstrong, 1978; Loux, 2017). The fundamental problem for nominalism is that it cannot individuate particulars without implicitly relying on universals. To identify an object as this object—rather than another—we must refer to its features: color, shape, extension, texture, spatiotemporal continuity, functional action, or kind-membership. Each of these features is a universal, not a purely particular element. Without universals there can be no predicates, no object-identification, no classification, no recognition, no stable reference, no possibility of thought or discourse about anything. The socalled 'bare particular' is an incoherent concept; nothing in experience is ever presented without determinate qualities (Armstrong, 1978). Our encounter with an object is always structured by universals. This critique applies even to sophisticated forms of nominalism. Resemblance nominalism (which grounds similarity without shared universals) faces Bradley's regress: resemblance itself is a relation, and relations are universals. Trope theory (which posits particularized properties) must explain what makes two tropes 'of the same type'—and the answer invokes universality. Class nominalism (which reduces properties to set membership) cannot explain why classes are non-arbitrary without appealing to shared features. Thus, nominalism covertly relies on universals to deny them. As Husserl (1983) noted, perceptual experience is always intentional: 'something as something.' This 'as' structure presupposes universal categories through which particulars become intelligible. 4. Against Platonism Platonism asserts that universals exist independently of particular things and that particulars merely instantiate or participate in these transcendent forms. While this view successfully preserves the objectivity of universals, it fails to explain how we come to know them. Universals are never given to us in isolation. We do not encounter 'redness' floating freely. We encounter red apples, red flags, red flowers. If universals existed in a separate realm, Reality-Mode Ontology Page 8 knowledge of them would require some intuitive access beyond empirical or phenomenological means—a view that strains both epistemology and ontology (Loux, 2017). Moreover, the Platonist faces the problem of instantiation: what connects the universal to the particular? Why does triangularity appear in this triangle rather than that one? The metaphysical link is never clearly explained. This is the classic Third Man Argument: if particulars resemble the Form by participating in it, what explains the resemblance between the Form and its instances? A regress threatens. Merleau-Ponty (2012) argued that perception is always concrete and embodied, never a direct encounter with abstract essences. The lived body mediates all access to the world; there is no disembodied cognition that could grasp transcendent forms. Thus, Platonism exaggerates the independence of universals at the expense of their grounding in the world of experience. 5. Relational Ontology I: Dual Dependence The relational theory developed here avoids the pitfalls of both nominalism and Platonism by asserting a dual dependency between particulars and universals. 5.1 Ontological Dependence of Particulars on Universals Particulars are always encountered as structured. They possess qualities, relations, and forms that make them intelligible and distinguishable. A particular is therefore not a metaphysically primitive unit but an intersection of universals—a constellation of attributes that together make it the kind of thing it is. This view resonates with Aristotle's form-matter framework (Aristotle, 1984), but expands it: not one form, but multiple universals contribute to what a thing is. A particular apple is structured by color-universals (redness), shape-universals (roundness), tactile-universals (smoothness), kind-universals (apple-hood), and relational-universals (being-on-the-table). Remove these universals and nothing intelligible remains. Lowe's (2006) four-category ontology similarly recognizes that particulars (objects) and universals (kinds and attributes) stand in relations of instantiation and characterization. The present framework extends this by emphasizing that these relations are not merely formal but constitutive: particulars are made what they are by universals. 5.2 Epistemic Dependence of Universals on Particulars Reality-Mode Ontology Page 9 On the other hand, universals are knowable only through their multiple instantiations. To recognize a universal, we must perceive the common structure across different objects. This insight parallels Husserl's notion of eidetic variation (Husserl, 1983): the universal (eidos) emerges as the invariant across a manifold of appearances. By imaginatively varying the features of an object while preserving its identity, we discover what is essential (universal) and what is accidental (particular). It also aligns with cognitive science. Rosch's (1978) prototype theory demonstrates that categories (universals) form through detecting family resemblances across exemplars. Murphy (2004) shows that concept formation depends on abstracting stable patterns from variable instances. Thus universals are epistemic achievements grounded in multiplicity. 5.3 The Dual-Dependence Thesis We can now formulate the core position: Particulars are ontologically dependent on universals, and universals are epistemically dependent on particulars. This duality brings coherence to both sides of the metaphysical divide. It shows that neither particulars nor universals enjoy absolute independence. Instead, they constitute one another in a dynamic, relational structure. Universals cannot float free; particulars cannot stand alone. Reality-Mode Ontology Page 16 Why? Because the human visual system is not a spectrometer. It compresses continuous variation into discrete categories via opponent-process neural circuits (Hurvich & Jameson, 1957) and categorical perception mechanisms (Rosch, 1978). 'Redness' is thus a mode-specific universal: it exists within the visual mode and is constituted by the structure of human color perception. An organism with different photoreceptors (e.g., mantis shrimp with 16 types of color receptors) would carve the electromagnetic spectrum differently. 'Redness' as we know it would not exist for them. The universal is mode-relative. 9.3 Water: Modal Compression The case of water illustrates modal compression. We perceive 'water' as a unified substance. But physically, water exists in radically distinct states: Ice: crystalline solid with hydrogen bonds locked in hexagonal lattice; hard, cold, rigid. Liquid water: dynamic hydrogen bonding, high heat capacity, universal solvent properties. Vapor: high-energy gas phase, molecules moving independently, occupying available volume. These states have radically different physical properties. Yet our cognitive system compresses them into a single universal ('water') because they share a chemical composition (H₂O) and because our practical interactions treat them as transformations of the same substance. This compression is adaptive—it supports coherent action—but it obscures the modal plurality of the underlying reality. 9.4 The Epistemological and Ontological Dimensions of RMP A critical question arises: Is RMP merely an epistemic limitation, or does it have ontological consequences? The answer, I argue, is both. Epistemically, RMP constrains what we can know. We cannot perceive infrared directly, cannot experience quantum superposition, cannot sense magnetic fields. Our knowledge is bounded by our sensory-cognitive modes. Ontologically, RMP affects which universals and particulars exist for us. 'Redness' is a universal within the human visual mode; it does not exist in the electromagnetic mode as a Reality-Mode Ontology Page 17 discrete category. The ontology we inhabit—the structured world of objects, properties, and kinds—is constituted within and relative to our modes of access. This does not make the world 'subjective' in a problematic sense; the modal structures accessed are genuinely real. But it does mean that our ontology is perspectival: it reflects the structure of reality as revealed through human modes. This position is consistent with structural realism (French, 2014; Ladyman & Ross, 2007), which holds that science describes the relational structure of reality rather than intrinsic 'things in themselves.' RMP adds the thesis that human perception accesses a subset of this relational structure through specific modal channels, generating mode-specific universals and particulars. Reality-Mode Ontology Page 18 10. Cognitive Science Integration: Predictive Processing, Coarse-Graining, and Abstraction Modern cognitive science provides robust empirical and theoretical support for Reality-Mode Ontology. Three frameworks are particularly relevant: predictive processing, coarse-graining, and hierarchical abstraction. 10.1 Predictive Processing Predictive processing (Clark, 2013, 2016; Friston, 2010; Hohwy, 2013) proposes that the brain is fundamentally a prediction machine. Rather than passively receiving sensory input, the brain actively generates predictions about the causes of sensory signals and updates these predictions based on prediction errors. This framework explains why the brain detects invariance (sameness) and change (contrast)— the very primitives of Reality-Mode Ontology. Predictive models extract stable regularities (universals) while flagging deviations (particulars-as-anomalies). The hierarchical structure of predictive processing—with higher levels encoding more abstract, temporally extended regularities—mirrors the nested hierarchy of universals and particulars. Crucially, predictive processing is selective. The brain does not model reality in its entirety; it models only what is useful for survival and action. This selectivity is precisely what RMP describes: the brain accesses certain modes of reality (those relevant to prediction and action) while ignoring others. The result is a mode-specific world model. 10.2 Coarse-Graining Coarse-graining is the process by which complex systems are described at a reduced resolution, ignoring fine-grained details in favor of macroscopic regularities (Wimsatt, 2007). This is ubiquitous in science: statistical mechanics describes gases in terms of temperature and pressure rather than individual molecular positions; ecology describes populations rather than individual organisms. Human cognition performs pervasive coarse-graining. We perceive 'surfaces' rather than atomic lattices, 'colors' rather than wavelength distributions, 'objects' rather than quantum fields. This coarse-graining is adaptive: fine-grained detail is computationally expensive and often irrelevant to action. Reality-Mode Ontology Page 19 The universal-particular binary is an artifact of coarse-graining. We perceive sharp categorical boundaries (red/orange, cup/table, self/other) because our cognitive system compresses continuous variation into discrete units. Reality-Mode Ontology explains this: coarse-graining is a consequence of modal access, where each mode provides a characteristic resolution. 10.3 Hierarchical Abstraction Neural processing is hierarchical (Rao & Ballard, 1999; Clark, 2016). In the visual system, early areas (V1) encode edges and orientations; intermediate areas encode shapes and textures; higher areas encode objects and categories. This hierarchy mirrors the nested ontology proposed here: low-level features → particulars → kinds → abstract categories. Abstraction is the cognitive process by which higher-level representations are extracted from lower-level inputs. Each level of abstraction generates new universals: edges are universals relative to pixels; shapes are universals relative to edges; objects are universals relative to shapes. The hierarchy is not merely representational but constitutive: our world is structured by the abstractions we perform. This supports the scale-relativity thesis. What counts as a 'particular' depends on the level of abstraction: a shape is a particular at the level of object recognition but a universal at the level of edge detection. Neural architecture embodies the very structure Reality-Mode Ontology describes. Reality-Mode Ontology Page 20 11. The Universal-Particular Binary: Cognitive Limitation and MindIndependent Structure The distinction between universals and particulars appears binary only because of the brain's cognitive architecture. This is not a mere 'illusion' in the pejorative sense—it is a real structural constraint. However, a deeper question arises: if the binary is cognitive, what is the mindindependent structure of reality? Is hierarchy itself a cognitive imposition? 11.1 The Nature of the Cognitive Limitation Our perceptual and conceptual systems evolved to navigate, survive, categorize, and act quickly. They did not evolve to perceive the infinite hierarchical structure of reality, detect nested universals, or grasp microand macro-scales outside human life. As a result, our cognitive systems partition the continuous, nested hierarchy of reality into discrete units of 'particulars' and 'universals.' This partition is not a misinterpretation but a structural constraint imposed by the limited spectral range of human cognition. Our minds cannot directly apprehend the fine-grained gradations and intermediate levels that lie between what we call particulars and universals. Consequently, the binary distinction is a real cognitive limitation: it captures how we must organize the world in order to perceive, understand, and navigate it, even though reality itself is not structured in such a sharp dichotomy. 11.2 Is Hierarchy Mind-Independent? The Structural Realist Answer A radical critique might ask: if the universal-particular binary is cognitive, is the hierarchy itself not also cognitive? Perhaps 'scale' is merely another imposition of our conceptual scheme. This objection has force, but it can be answered. The claim of Reality-Mode Ontology is not that human cognition perfectly mirrors the structure of reality, but that there are objective structural features of reality that our cognition tracks imperfectly. Hierarchy is one such feature. Evidence for mind-independent hierarchy comes from multiple sources: Physical scale separation: The universe exhibits objective scale separation. Quantum effects dominate at 10^-15 meters; atomic bonding at 10^-10 meters; molecular interactions at 10^-9 meters; cellular processes at 10^-6 meters; organismal behavior at 10^0 meters; planetary dynamics at 10^7 meters. These scales are not arbitrary human impositions; they are distinguished by the physical processes that dominate at each level. Reality-Mode Ontology Page 21 Emergent properties: Higher levels exhibit properties not predictable from lower levels alone. Liquidity is not a property of individual H₂O molecules; it emerges from their collective interaction. Consciousness is not a property of individual neurons; it emerges from their organization. These emergent properties mark objective transitions in the hierarchy. Causal closure at levels: Many phenomena can be explained entirely at one level without descending to lower levels. Population genetics explains allele frequencies without reference to quantum mechanics; thermodynamics explains heat flow without tracking individual molecules. This explanatory autonomy suggests that levels are not merely descriptive conveniences but reflect real causal structure. Structural realism (Ladyman & Ross, 2007) provides the philosophical framework: what exists is structure, and structure is inherently hierarchical. The hierarchy is not a cognitive artifact; it is a feature of reality that cognition approximates. What is cognitive is the binary simplification of a continuous hierarchy into discrete categories. 11.3 The Continuous Hierarchy: What Reality Is Like If the binary is cognitive but the hierarchy is real, what is the 'noumenal' structure of the world? The answer: a continuous, nested, multi-scale structural hierarchy without sharp boundaries between universals and particulars. At every scale, there are patterns (structural universals) and instances of patterns (structural particulars). But the boundary between pattern and instance is itself scale-relative. What functions as a pattern at one resolution functions as an instance at another. The hierarchy extends indefinitely in both directions—toward smaller scales (quantum fields, strings?) and larger scales (cosmic structures, multiverse?). Human cognition accesses a finite window of this infinite hierarchy. Within that window, we impose binary categories because our cognitive architecture requires discretization for action. But the underlying reality is continuous: patterns within patterns within patterns, with no ultimate atoms and no final totalities. This view is consistent with contemporary physics, which describes reality as fields and structures rather than substances and things. It is also consistent with complexity science, which Reality-Mode Ontology Page 22 studies how patterns emerge and nest across scales. Reality-Mode Ontology synthesizes these insights into a coherent metaphysical framework. Reality-Mode Ontology Page 23 12. Engaging Counterpositions A robust metaphysical theory must engage with alternative positions. This section addresses challenges from naive realism, Armstrong's immanent universals, representational disjunctivism, Sellars's manifest/scientific image distinction, and the composition-instantiation objection. 12.1 Naive Realism Naive realism holds that perception provides direct, unmediated access to mind-independent reality. If naive realism is correct, RMP's claim that we perceive only 'modes' of reality might seem false—we perceive reality itself, not a filtered version. However, even naive realism acknowledges that perception is selective: we see visible light, not radio waves; we hear audible frequencies, not ultrasound. RMP is compatible with direct perception within a mode while denying that any mode provides complete access. The directness is modal: within the visual mode, we directly perceive colors; but colors are modespecific structures, not exhaustive representations of electromagnetic reality. Naive realism and RMP are thus compatible once we distinguish between direct access within a mode and complete access across all modes. 12.2 Armstrong's Immanent Universals Armstrong (1978) defends immanent universals: universals exist in their instances, not in a separate Platonic realm. This appears compatible with Reality-Mode Ontology, but Armstrong insists that universals are sparse and objective—only fundamental physical properties count as genuine universals. Reality-Mode Ontology challenges this parsimony. If universals are mode-relative and scalerelative, then 'redness' is a genuine universal within the human visual mode, even if it has no counterpart in fundamental physics. The framework is more permissive than Armstrong's, recognizing universals at multiple levels and modes. This does not entail proliferation without limit: universals are constrained by the structural regularities actually accessible through given modes. But it does mean that the ontology of universals is pluralistic, not sparse. 12.3 Sellars's Manifest and Scientific Images Sellars (1963) distinguishes the manifest image (the world as it appears to common sense) from the scientific image (the world as described by natural science). One might argue that RMP Reality-Mode Ontology Page 24 merely redescribes this distinction: modes are the manifest image, fundamental reality is the scientific image. But RMP differs in two ways. First, Sellars's distinction is dualistic—the scientific image is more fundamental, the manifest image is ultimately to be reduced or explained away. RMP is pluralistic: all modes are real structural domains; none is more fundamental than others. The visual mode reveals genuine features of electromagnetic reality, just as physics reveals other features. Second, Sellars's distinction concerns levels of description; RMP concerns modes of access. A mode is not a description but a channel through which structure is revealed. Different organisms access different channels, generating different manifest images—but each is ontologically legitimate. 12.4 Locke's Primary and Secondary Qualities Locke distinguished primary qualities (extension, solidity, motion) that exist in objects from secondary qualities (color, sound, taste) that exist only as effects in perceivers. RMP might seem to align secondary qualities with 'modes' and primary qualities with 'real' structure. But RMP rejects this distinction. All perceptible qualities are mode-relative: extension is revealed through tactile and visual modes; solidity through tactile modes; motion through visual and proprioceptive modes. There is no mode-independent access to 'primary' qualities. What Locke called primary qualities are those that are convergently accessible through multiple modes; but convergence does not entail mode-independence. Reality-Mode Ontology thus collapses the primary/secondary distinction in favor of modal pluralism. 12.5 The Composition-Instantiation Objection A sophisticated objection holds that Reality-Mode Ontology conflates composition (part-whole relations) with instantiation (type-token relations). When I say 'appleness becomes a particular relative to fruitness,' am I not confusing a species-genus relation (taxonomic) with an instancekind relation (instantiation)? This objection was addressed in Section 8, but deserves further clarification. The claim is not that 'apple' instantiates 'fruit' in the way that this apple instantiates 'apple.' Rather, the claim concerns structural hierarchy: the structural pattern 'appleness' (a recurring organization across many apples) functions as a concrete particular when it serves as one of many instantiations of the higher-level structural pattern 'fruitness.' Reality-Mode Ontology Page 25 The confusion arises from treating 'appleness' as a logical class rather than a structural pattern. Classes stand in subset relations; patterns stand in instantiation-composition relations. RealityMode Ontology concerns patterns, not classes. A pattern at level N is instantiated by concrete structures at level N; those structures, collectively organized, constitute patterns at level N+1. This is neither pure instantiation nor pure composition but a hybrid relation characteristic of structural hierarchies.