The Metaphysical Argument the Depth Tradition Had Long Required

Bernardo Kastrup’s Why Materialism Is Baloney (2014) addresses, from the side of analytic philosophy of mind, a problem that the depth-psychological tradition has carried for a century without securing an external philosophical solution. Jung’s late writings on the unus mundus, on synchronicity, on the psychoid layer of the unconscious, and on the metaphysical implications of his alchemical research had repeatedly approached an idealist ontology without endorsing it explicitly. James Hillman’s polytheistic archetypal psychology had presupposed an imaginal realism whose metaphysical foundations Hillman left under-elaborated. Henry Corbin’s mundus imaginalis and Roberts Avens’s extension of Corbin into depth psychology had argued for the ontological reality of the imaginal but as theologians and historians of religion rather than as analytic philosophers. The depth tradition had a metaphysics; it did not have a contemporary analytic-philosophical defence of that metaphysics. Kastrup, a Dutch computer scientist with formal training in philosophy who works as a researcher and writer in the analytic philosophy-of-mind tradition, supplies one. Why Materialism Is Baloney is the popular-level statement of his case; the more rigorous The Idea of the World (2019) extends the argument into the technical philosophy literature. The popular book is the better entry point for depth-psychological readers because its rhetorical orientation is to dissolve the standard prejudices against idealism that the analytic tradition has cultivated for a century.

Analytic Monistic Idealism: The Position and Its Defence

The book’s central metaphysical thesis is analytic monistic idealism: the universe is in itself a single field of mind, of which apparently separate physical bodies and brains are localized perspectival representations. The position is monist because it denies the dualist proliferation of mental and physical substances; it is idealist because the single substance it identifies is mental rather than physical; it is analytic because it argues for the position by ordinary philosophical reasoning rather than by appeal to mystical authority. Kastrup’s defence proceeds in two main moves. The first move is the demolition of the materialist position by demonstrating that the standard materialist explanations of consciousness (consciousness as identical to brain states; consciousness as emergent from physical complexity; consciousness as functionally implemented information processing) all face the hard problem in some form: they fail to explain why there is something it is like to be a conscious subject at all, given physical states that, by their own standard descriptions, do not include subjective phenomenal character. The second move is the constructive case for idealism. If consciousness cannot be derived from non-conscious physical states, and if first-person phenomenology is the only thing each subject directly knows, then the parsimonious metaphysical inference is that consciousness — mind — is the fundamental category, and apparent physical reality is a representation within or generated by mind. This is not a Berkeleyan idealism in which my individual mind constitutes the world; it is a monistic idealism in which the world is constituted by a single underlying mind, of which my individual mind is a localized perspective.

The Whirlpool Analogy: Localized Consciousness in a Field of Mind

Kastrup’s most pedagogically useful contribution is the whirlpool analogy, which the book develops at length. Consider a stream of water. The whirlpools that form in the stream are real — they have stable form, distinguishable boundaries, characteristic dynamics — but they are not made of a substance distinct from the water of the stream. They are localized turbulence patterns in the underlying flow. Kastrup proposes that individual conscious subjects stand to the underlying field of mind as whirlpools stand to the stream. The individual subject is real, has stable form, has a distinguishable boundary, has its own dynamics — and is not made of a substance distinct from the underlying mind of which it is a localization. The analogy does substantial conceptual work. It explains why personal consciousness has the bounded, distinguishable character it does (the whirlpool is a real localized pattern). It explains why the boundary is not absolute (the whirlpool can dissipate, can merge with other whirlpools, can re-form). It explains why mystical, near-death, depth-psychological, and psychedelic experiences in which the boundary thins or dissolves are not pathological misperceptions but accurate disclosures of the underlying ontological situation: the subject in such experiences is recognising what was always the case, namely that the boundary of the individual whirlpool is real but not absolute, and that the underlying field of which the whirlpool is a localization is itself the basic ontological substrate.

Filtering, Memory, and the Depth-Psychological Inheritance

Kastrup’s engagement with the empirical literature is part of what makes the book valuable for depth-psychological readers. He draws extensively on the brain-as-filter hypothesis developed by Aldous Huxley in The Doors of Perception (drawing in turn on Henri Bergson’s Matter and Memory and William James’s late writings) — the proposal that the brain’s function is not to generate consciousness but to filter a much wider field of awareness into the narrow perspective of individual subjective life. Kastrup updates this hypothesis with the empirical findings on psychedelic experience (the recent psilocybin and LSD neuroimaging studies showing reduced rather than increased cortical activity correlated with expanded subjective experience), the phenomenology of near-death experience (with critical engagement of the work of Pim van Lommel, Sam Parnia, and the Greyson scale), and the dissociative phenomena that the relational-clinical tradition has been studying — Kastrup’s engagement with dissociative identity disorder is particularly suggestive for depth-clinical readers, since it supplies a metaphysical model in which the apparent multiplicity of dissociated self-states is not pathology against an underlying unitary self but localized whirlpools within the patient’s field of mind whose differentiation has become unusually stable. The depth-psychological reader will recognise the suggestive parallel with Bromberg’s self-states model and with Hillman’s polytheistic psychology — and will find in Kastrup’s framework a contemporary metaphysical articulation of what the depth tradition has been describing in its own clinical and archetypal vocabulary.

For any depth-psychological reader who has wanted a contemporary analytic-philosophical defence of the metaphysics the tradition has long assumed, Why Materialism Is Baloney is the accessible point of entry. To read it is to inherit a working idealist framework whose analytic credentials cannot be dismissed as mystical apologetics, and to recognise that the depth tradition has been describing, in its own clinical and archetypal vocabulary, an ontology that contemporary philosophy of mind is only now beginning to recover. After Kastrup, the depth practitioner has a metaphysics — whirlpool, field, filter — that the consulting room can quietly carry, and that the patient’s mystical and dissociative material can be located within without requiring either confessional commitment or reductive deflation.