A flower releases a particular set of volatile chemicals. An animal with the appropriate sensory system encounters those molecules and experiences a scent. We do not imagine that the scent is a supernatural substance hidden inside the flower. We understand it as something that happens through chemistry, a receptive organism, and an environment in which they meet.
I think consciousness is like that.
It is not the universe recognizing itself, if recognition implies intention or a cosmic goal. It is the universe experiencing itself because, in at least some living systems, physical processes have become complex enough to produce experience. Consciousness is a happy accident of chemistry operating under physical law. It is a miracle only in the nonreligious sense: an outcome so improbable and extraordinary that understanding its mechanisms does not drain it of wonder.
Philosophers call the question of how physical processes produce subjective experience the “hard problem” of consciousness. We can explain how the brain discriminates stimuli, integrates information, stores memories, directs attention, or produces speech. But why should any of that feel like something from the inside? Why is there an experience of red, pain, or being alive?
I am not persuaded that this is a separate kind of problem. The feeling of mystery may come from the starting assumption that subjective experience must be something over and above the physical activity. Once that division is installed, no amount of neural description can cross it. We have defined matter as nonexperiential and consciousness as nonmaterial, then expressed surprise that the categories will not meet.
But living systems did not begin with our categories. Organisms developed ways to distinguish conditions, respond to threat, seek resources, and retain information from prior encounters. Across evolutionary time, these regulatory and interpretive systems became more complex. A nervous system predicts, prioritizes, coordinates, and learns. Consciousness may be what some forms of extraordinarily integrated biological interpretation feel like when they are occurring.
That is not yet a complete scientific explanation. Saying consciousness emerges from complexity can become a placeholder if we do not specify which processes matter and why. “Emergence” should not be used as a tasteful synonym for magic. There remains difficult empirical work: identifying the neural and bodily conditions associated with experience, explaining integration across systems, and understanding why alterations in metabolism, injury, development, sleep, drugs, or disease change consciousness as they do.
Still, an incomplete physical explanation does not require a nonphysical answer. We did not need a spirit of fermentation before we understood microbes. Ignorance about a mechanism is not evidence of a second substance.
The flower metaphor matters because it resists two opposite mistakes. The first is supernaturalism: consciousness as a soul inserted into matter. The second is dismissal: consciousness as unreal because it is produced physically. A scent is real even though it arises through chemistry and perception. Pain is real even though nerves and brains make it possible. Love does not become counterfeit when hormones, memory, attachment, and prediction participate in it.
To say that consciousness is physical is not to say that it is trivial. Physical reality is the only reality we know to be capable of producing everything we have ever valued.
Some materialist accounts call the self or consciousness an illusion. The word can mislead. An illusion is not nothing; it is an experience whose interpretation is mistaken. The visual system can produce a convincing perception that does not correspond to the external arrangement. Likewise, the brain may construct a unified, continuous self without there being a permanent inner observer who owns every thought.
The construction is real. Its implied metaphysics may not be.
This approach also explains why consciousness is vulnerable. General anesthesia can interrupt it. Brain injury can change personality, perception, or memory. Sleep alters its organization. Hunger, stress, hormones, illness, and drugs change what the world feels like. These facts are awkward if consciousness belongs to a separate, stable essence. They are expected if experience is an activity of a living body.
The body does not merely supply fuel to a mind that floats above it. Metabolic state participates in the experience. A brain is energy-intensive tissue embedded in a body that must continuously allocate resources. Exhaustion changes attention. Threat changes perception. Hunger changes salience. None of this means a simple calorie calculation can explain thought, nor that difficult thinking dramatically burns away food energy. It means cognition is biological work constrained by the condition of the organism doing it.
Consciousness, then, is neither the ruler of the body nor a passenger inside it. It is something a living system does. It interprets an environment, draws on stored experience, predicts what may happen next, and coordinates responses. It feels separate because a system charged with protecting an organism benefits from representing that organism as a bounded self.
The scent of a flower does not need to be eternal to be exquisite. Consciousness does not need to be supernatural to be profound. Its dependence on matter is not a demotion. It is the source of its fragility, its contingency, and its astonishing presence now.
About the author
Jennifer Nickell, RD
Jennifer Nickell is a registered dietitian and nutrition educator whose work connects nutrition science with human development, adult learning, eating behavior, and real-life conditions.
Educational information only. This article is not individualized medical or nutrition treatment.