The persistent debates surrounding the existence, primacy, and ontological status of consciousness are, I believe, rooted in a methodological oversight rather than in the complexity of consciousness itself. Contemporary discussions often begin by treating consciousness as an explanatory problem—as something whose existence, origin, or nature must first be established. This starting point is already questionable, for every attempt to investigate consciousness presupposes the very phenomenon under investigation. Consequently, the first task is not to explain consciousness but to determine whether it is, in fact, something that stands in need of explanation in the same way as an external object.
Every empirical investigation begins with observation. Before any hypothesis is formulated, before any measurement is performed, and before any logical inference is drawn, there is already an undeniable fact: experience is present. This statement is not a metaphysical proposition but an immediate datum. At this very moment, perceptions, thoughts, sensations, emotions, memories, and reasoning are manifest. Whether these experiences correspond to an external world, a simulation, a dream, or a neural process is a secondary question. The primary fact, preceding every theory about them, is that they are experienced.
The crucial point is easily overlooked because attention is almost always directed toward the contents of experience rather than toward the condition that makes experience possible. Scientific inquiry excels at analysing the structure, causes, and correlations of perceptual and cognitive contents. It explains how neural activity correlates with perception, how memory is encoded, and how cognition operates. Yet none of these investigations addresses the more fundamental question: what is the status of the very presence in which all such phenomena become manifest? Neural events, computational models, behavioural responses, and subjective reports are all objects of investigation. They are known. The question concerns that by virtue of which they are known.
This distinction is not mystical but methodological. Every scientific observation presupposes observation itself. Every experiment presupposes an observer to whom the experimental data are available. Every logical argument presupposes awareness of its own premises and conclusions. One may successfully explain the mechanisms underlying perception without thereby explaining the fact that perception is present at all. An explanation of the contents of consciousness is not, by itself, an explanation of consciousness as the condition under which those contents are given.
A careful examination of immediate experience reveals an important asymmetry. The contents of experience are continuously changing. Sensory perceptions arise and disappear. Thoughts succeed one another. Emotional states fluctuate. The body undergoes constant physiological modification. Even the sense of personal identity changes over time. In contrast, the fact that these changing states are manifest does not itself appear to fluctuate in the same way. The particular objects of awareness vary, but their manifestation remains invariant. Every experience, irrespective of its content, shares one irreducible characteristic: it is present as experienced.
This observation does not require metaphysical commitment. It is a phenomenological description of the structure of experience itself. The question, then, is whether this invariant manifestation should be regarded as another object within experience or as the necessary condition for the appearance of every object. If it were itself an object, it would require another act of awareness to reveal it, leading to an infinite regress. Consequently, the possibility of experience appears to require a self-revealing principle that does not itself stand in need of another means of disclosure.
From this standpoint, consciousness is not established by inference, experiment, or conceptual analysis. Rather, inference, experiment, and conceptual analysis are themselves possible only because consciousness is already present. Every attempt to deny consciousness confirms it, because the denial itself is consciously entertained. Every demand for proof presupposes the conscious apprehension of both the premises and the conclusion. Thus, consciousness occupies a unique epistemic position. Unlike every other object of inquiry, it is not established by evidence external to itself; it is the indispensable presupposition of all evidence.
This immediately distinguishes consciousness from every empirical phenomenon. Physical systems may require explanation in terms of more fundamental physical processes. Biological organisms may be explained through evolutionary mechanisms. Cognitive functions may be modelled computationally. Consciousness, however, cannot be treated as merely another object within this explanatory hierarchy, because every explanatory framework already assumes the conscious disclosure of the framework itself. This does not establish any particular metaphysical theory of consciousness, but it does establish that consciousness cannot consistently be reduced to an object whose existence depends entirely upon explanatory constructs that themselves presuppose conscious experience.
The Advaita Vedānta tradition begins precisely from this epistemic observation. It does not infer consciousness from the world; it recognises consciousness as the self-evident basis upon which every possible experience of the world depends. Accordingly, the Upaniṣads identify this self-revealing presence—not the changing contents of experience, nor the psychological personality, nor the body, nor the cognitive processes—as Ātman. The claim is not that consciousness belongs to an individual organism, but that individuality itself is a conceptual and experiential configuration appearing within this more fundamental reality.
The doctrine of adhyāsa proposed by Śaṅkarācārya follows naturally from this analysis. If consciousness is self-revealing and invariant, while the body, mind, and personal identity are variable objects of experience, then the ordinary conviction “I am this body-mind” cannot be an ultimate fact but must represent an identification between two distinct orders of reality. The characteristics of consciousness—existence, self-revelation, and apparent sentience—are attributed to the body-mind, while the limitations of the body-mind are attributed to consciousness. This reciprocal attribution constitutes what Advaita calls adhyāsa. It is not the production of a new reality but a cognitive error analogous to mistaking a rope for a snake: the appearance is experienced, yet the interpretation is mistaken.
From this perspective, liberation is not the acquisition of a new state of consciousness, nor the emergence of a higher experience. It is the correction of an epistemic error regarding the identity of the experiencer. The Upaniṣads therefore function, not as speculative metaphysics, but as a disciplined inquiry into the structure of immediate experience. Their conclusion is that the self-revealing consciousness presupposed in every act of knowing is not an emergent property of the individual but the fundamental reality because of which both the individual and the world are experienced. Whether one ultimately accepts this conclusion depends not upon belief but upon the adequacy of the analysis itself.