Consciousness and evolutionary biology
Yew-Kwang Ng
Animal Sentience August 3, 2026 DOI: 10.51291/2377-7478.1179 (opens in new tab)
Study at a glance
AI-extracted from the abstract| Characteristics | Theoretical or philosophical paper Peer reviewed |
|---|---|
| Topics | Philosophy of mind |
| Keywords | Evolution Cognitive neuroscience Zoology Cognition and perception Life sciences |
| Key points | Argues that Reber's axiom is not supported by evolutionary biology, and that consciousness is linked to behavioral flexibility rather than cell wall flexibility. Proposes that determining which species can experience welfare is a more pressing issue than solving the hard problem of consciousness. |
Abstract
Reber’s axiom: “Any organism with flexible cell walls, a sensitivity to its surrounds and the capacity for locomotion will possess the biological foundations of mind and consciousness” does not seem to be supported by things we know and the logic of evolutionary biology. The latter leads to the conclusion that conscious species are flexible in their behavior (rather than in their cell walls), as argued in Ng (1995, 2016). Locomotion may be completely hard-wired and need not involve consciousness. It is hard enough to explain how consciousness could emerge in a sophisticated brain: Isn’t it a harder problem to show or see how consciousness could emerge in a much more primitive organism, as Reber suggests? As we are unlikely to solve the hard problem of consciousness any time soon, surely a more immediate problem is to ascertain with high probability which species are capable of welfare (enjoyment and suffering).
Comparable studies
Other theoretical and historical papers on philosophy of mind, most cited first.
| Study | Year | Design | Participants |
|---|---|---|---|
| Psychosis as a state of aberrant salience: a framework linking biology, phenomenology, and pharmacology in schizophrenia. | 2003 | Theoretical or philosophical paper | |
| From dopamine to salience to psychosis--linking biology, pharmacology and phenomenology of psychosis. | 2005 | Theoretical or philosophical paper | |
| How do the brain's time and space mediate consciousness and its different dimensions? Temporo-spatial theory of consciousness (TTC). | 2017 | Theoretical or philosophical paper | |
| The phenomenology of deep brain stimulation-induced changes in OCD: an enactive affordance-based model. | 2013 | Theoretical or philosophical paper | |
| Looking for the Self: Phenomenology, Neurophysiology and Philosophical Significance of Drug-induced Ego Dissolution | 2017 | Theoretical or philosophical paper |