Mechanistic physics occupies a pivotal and contested position throughout the depth-psychology corpus, functioning less as a neutral scientific descriptor than as a cultural and epistemological symbol whose adequacy is perpetually under interrogation. The corpus documents a decisive historical arc: from Newton's reduction of nature to passive matter governed by calculable forces, through the nineteenth-century materialist hegemony that shaped Freud's causal-mechanistic psychology, to the quantum revolution that shattered classical assumptions and opened new conceptual space for mind, meaning, and synchronicity. Jung and his immediate circle — above all in the collaboration with Wolfgang Pauli — constitute one major axis of engagement, treating mechanistic causality as a necessary but radically insufficient explanatory framework, one that must be supplemented by finalism, acausality, and the psychoid hypothesis. McGilchrist represents the other dominant axis, arguing systematically that the machine model — with its commitment to linear causality, static parts, context-independence, and upward reduction — is precisely the cognitive pathology of the left hemisphere writ large onto science. Von Franz, Rudhyar, Tarnas, and Conforti each contribute subsidiary but coherent positions: the mechanistic worldview is consistently identified as the receding 'old king' whose abdication is required before a genuinely participatory or archetypal understanding of nature becomes possible. The central tension running through all positions is whether quantum and process physics have, in principle, already dissolved mechanistic physics from within — or whether the life sciences and psychology still labor under its shadow.
In the library
26 passages
The causal explanation must be mechanistic if we are not to postulate a metaphysical entity as first cause... If we assume for the moment that this mechanistic explanation is 'true,' it would be the sort of truth which is exceptionally tiresome and rigidly limited in scope.
Jung argues that a strictly mechanistic causal account of psychic life, while internally consistent, is epistemologically impoverished and cannot encompass the teleological dimension intrinsic to psychology.
Jung, C. G., Collected Works Volume 1: Psychiatric Studies, 1902thesis
As in modern physics there is no matter in the sense of rigid and inert particles, but rather atoms are node-points of a wave dynamic, so in biology there is no rigid organic form as a bearer of the processes of life; rather there is a flow of processes, manifesting itself in apparently persistent forms.
McGilchrist, citing von Bertalanffy, argues that modern physics has already displaced the mechanistic particle model and that biology must follow suit by replacing thing-ontology with process-ontology.
McGilchrist, Iain, The Matter with Things: Our Brains, Our Delusions, and the Unmaking of the World, 2021thesis
As in modern physics there is no matter in the sense of rigid and inert particles, but rather atoms are node-points of a wave dynamic, so in biology there is no rigid organic form as a bearer of the processes of life; rather there is a flow of processes, manifesting itself in apparently persistent forms.
McGilchrist, citing von Bertalanffy, argues that modern physics has already displaced the mechanistic particle model and that biology must follow suit by replacing thing-ontology with process-ontology.
McGilchrist, Iain, The Matter With Things: Our Brains, Our Delusions and the Unmaking of the World, 2021thesis
'Physicalism' is the idea that the universe is fundamentally composed of entirely blind, deaf, dumb – DEAD – particles in purposeless motion through empty space... On this definition of physicalism, 'life' and 'consciousness' are just words we have for epiphenomenal illusions with no causal influence on what happens.
McGilchrist presents the mechanistic-physicalist worldview at its starkest in order to expose its incoherence: it renders life, consciousness, and meaning unintelligible by definition.
McGilchrist, Iain, The Matter with Things: Our Brains, Our Delusions, and the Unmaking of the World, 2021thesis
'Physicalism' is the idea that the universe is fundamentally composed of entirely blind, deaf, dumb – DEAD – particles in purposeless motion through empty space... On this definition of physicalism, 'life' and 'consciousness' are just words we have for epiphenomenal illusions with no causal influence on what happens.
McGilchrist presents the mechanistic-physicalist worldview at its starkest in order to expose its incoherence: it renders life, consciousness, and meaning unintelligible by definition.
McGilchrist, Iain, The Matter With Things: Our Brains, Our Delusions and the Unmaking of the World, 2021thesis
Once one reaches quantum level, events cannot be separated from the consciousness of the observer, and the laws leave a place for mind in the description of every molecule… mind is already inherent in every electron, and the processes of human consciousness differ only in degree but not in kind from the processes of choice between quantum states.
McGilchrist marshals quantum theory to demonstrate that mechanistic physics undermines itself at its own foundational level, with observer-consciousness becoming irreducible even in elementary physical description.
McGilchrist, Iain, The Matter with Things: Our Brains, Our Delusions, and the Unmaking of the World, 2021thesis
Once one reaches quantum level, events cannot be separated from the consciousness of the observer, and the laws leave a place for mind in the description of every molecule… mind is already inherent in every electron, and the processes of human consciousness differ only in degree but not in kind from the processes of choice between quantum states.
McGilchrist marshals quantum theory to demonstrate that mechanistic physics undermines itself at its own foundational level, with observer-consciousness becoming irreducible even in elementary physical description.
McGilchrist, Iain, The Matter With Things: Our Brains, Our Delusions and the Unmaking of the World, 2021thesis
A serious problem for adherents to the machine model is that, while they are obliged by the model to explain organisms from the bottom up only, the deeper they go the less of anything remotely machine-like can be found.
McGilchrist argues that the reductionist program of mechanistic physics is self-defeating: the deeper one penetrates toward fundamental particles, the further one recedes from anything resembling a mechanism.
McGilchrist, Iain, The Matter with Things: Our Brains, Our Delusions, and the Unmaking of the World, 2021thesis
All attempts at stretching the machine model in one form or another come down to repeating de La Mettrie's absurdity, that of a 'clock that winds itself'. The correct conclusion to draw is not that some watchmaker, blind or otherwise, did or does wind the machine, but that it is not a machine.
McGilchrist delivers a pointed reductio ad absurdum of mechanistic biology, concluding that organisms are categorically not machines and that extending machine vocabulary is conceptually incoherent.
McGilchrist, Iain, The Matter with Things: Our Brains, Our Delusions, and the Unmaking of the World, 2021thesis
All attempts at stretching the machine model in one form or another come down to repeating de La Mettrie's absurdity, that of a 'clock that winds itself'. The correct conclusion to draw is not that some watchmaker, blind or otherwise, did or does wind the machine, but that it is not a machine.
McGilchrist delivers a pointed reductio ad absurdum of mechanistic biology, concluding that organisms are categorically not machines and that extending machine vocabulary is conceptually incoherent.
McGilchrist, Iain, The Matter With Things: Our Brains, Our Delusions and the Unmaking of the World, 2021thesis
Compared with the simpler (or simplistic) modern view of causality, which is entirely linear-mechanistic in nature, Aristotle's more nuanced and capacious formulation defined 'cause' as that which is a necessary, though not in itself sufficient, condition.
Tarnas contrasts the reductive linearity of mechanistic causality with Aristotle's four-cause framework, arguing that synchronicity requires formal and final causation that mechanistic physics categorically excludes.
Richard Tarnas, Cosmos and Psyche: Intimations of a New World View, 2006thesis
The astronomer in fact continues to calculate planetary orbits with considerable success by Newton's law of gravitation, unconcerned in practice with the achievements of modern physics; in the same way the engineer continues to make calculations for his machines very largely according to the laws of classical mechanics.
Pauli acknowledges the persistent practical utility of classical mechanical laws while insisting these represent limiting cases within, not refutations of, the more comprehensive framework of modern physics.
Pauli, Wolfgang, Writings on Physics and Philosophy, 1994supporting
To depart from the narrower reality concept of physics before quantum mechanics seemed to him to be getting perilously close to a point of view in which it is impossible to discriminate sufficiently clearly between dream or hallucination and 'reality'.
Pauli records Einstein's resistance to abandoning the mechanistic reality concept of pre-quantum physics, framing it as a philosophical commitment to discriminability between psychic and physical reality.
Pauli, Wolfgang, Writings on Physics and Philosophy, 1994supporting
The revolution brought about by the discovery of radioactivity has considerably modified the classical views of physics. So great is the change of standpoint that we have to revise the classical schema I made use of above.
Jung, in dialogue with Pauli, acknowledges that the quantum revolution in physics necessitates a corresponding revision of the conceptual schema underlying depth psychology's account of causality and synchronicity.
Jung, Carl Gustav, The Structure and Dynamics of the Psyche, 1960supporting
The entire identification of context-independence with objectivity is itself far too special and cannot be retained in its present form as a foundation for physics itself.
McGilchrist, drawing on Rosen, argues that the context-independence central to mechanistic physics is not a universal standard of objectivity but a highly restricted and non-generic special case inadequate to complex systems.
McGilchrist, Iain, The Matter with Things: Our Brains, Our Delusions, and the Unmaking of the World, 2021supporting
The entire identification of context-independence with objectivity is itself far too special and cannot be retained in its present form as a foundation for physics itself.
McGilchrist, drawing on Rosen, argues that the context-independence central to mechanistic physics is not a universal standard of objectivity but a highly restricted and non-generic special case inadequate to complex systems.
McGilchrist, Iain, The Matter With Things: Our Brains, Our Delusions and the Unmaking of the World, 2021supporting
'It is utterly impossible for human reason', wrote Kant in The Critique of Judgment, 'to hope to understand the generation even of a blade of grass from mere mechanical causes'.
McGilchrist cites Kant's decisive critique as a philosophical anchor for the claim that purely mechanical causation is constitutively incapable of accounting for biological self-organization.
McGilchrist, Iain, The Matter with Things: Our Brains, Our Delusions, and the Unmaking of the World, 2021supporting
'It is utterly impossible for human reason', wrote Kant in The Critique of Judgment, 'to hope to understand the generation even of a blade of grass from mere mechanical causes'.
McGilchrist cites Kant's decisive critique as a philosophical anchor for the claim that purely mechanical causation is constitutively incapable of accounting for biological self-organization.
McGilchrist, Iain, The Matter With Things: Our Brains, Our Delusions and the Unmaking of the World, 2021supporting
In the scientific world, to which Jung for the most part addressed his writings, the old king was predominantly represented by nineteenth-century rationalism and materialism, still prevalent among second-rate 'competent authorities,' which cannot conceive of a non-material reality of the psyche.
Von Franz identifies nineteenth-century mechanistic materialism as the reigning cultural complex — the 'old king' — whose resistance constituted the primary obstacle to the reception of Jung's depth-psychological discoveries.
von Franz, Marie-Louise, C.G. Jung: His Myth in Our Time, 1975supporting
We may make a distinction between mechanistic and intellectually analyzed parts, and holistic parts; the latter being in all respects organs, cells or groups of cells, and agents of the whole.
Rudhyar draws an explicit contrast between the atomistic parts of mechanistic analysis and the functionally integrated organs of holistic understanding, positioning astrology within the latter paradigm.
Dane Rudhyar, The Astrology of Personality: A Re-formulation of Astrological Concepts and Ideals in Terms of Contemporary Psychology and Philosophy, 1936supporting
The nature of the human mind compels us to take the finalistic view. It cannot be disputed that, psychologically speaking, we are living and working day by day according to the principle of directed aim or purpose as well as that of causality.
Jung argues that mechanistic causality alone is insufficient for psychology because human mental life is irreducibly purposive, requiring a finalistic explanatory dimension that mechanistic physics structurally excludes.
Jung, C.G., Collected Works Volume 4: Freud and Psychoanalysis, 1961supporting
In Newton's physics, nature was entirely passive: God was the sole source of activity. Thus, as in Aristotle, God was simply a continuation of the natural, physical order.
Armstrong identifies Newton's mechanistic system as one in which nature's complete passivity requires a divine external agent, tracing the theological consequences of reducing the cosmos to inert mechanical matter.
Armstrong, Karen, A History of God, 1993supporting
We have known since the 1960s that the behaviour of proteins cannot be fully described using linear, classical mechanics; and more recent research even demonstrates quantum entanglement between particles in two wholly distinct
McGilchrist marshals empirical evidence from molecular biology and quantum physics to demonstrate that classical linear mechanics fails as a descriptive framework even at the level of biological macromolecules.
McGilchrist, Iain, The Matter with Things: Our Brains, Our Delusions, and the Unmaking of the World, 2021supporting
We have known since the 1960s that the behaviour of proteins cannot be fully described using linear, classical mechanics; and more recent research even demonstrates quantum entanglement between particles in two wholly distinct
McGilchrist marshals empirical evidence from molecular biology and quantum physics to demonstrate that classical linear mechanics fails as a descriptive framework even at the level of biological macromolecules.
McGilchrist, Iain, The Matter With Things: Our Brains, Our Delusions and the Unmaking of the World, 2021supporting
This gradual process of 'rationalization' was combined in later antiquity and the medieval period with an increasingly mechanistic view of celestial causality, which in turn became linked with a more rigid determinism.
Tarnas traces the historical emergence of mechanistic causality within astrology itself, showing how a more fluid divinatory mode progressively hardened into a deterministic mechanistic framework under the influence of systematization.
Richard Tarnas, Cosmos and Psyche: Intimations of a New World View, 2006supporting
For centuries we have labored to locate and identify the so-called elementary particle — the fundamental building block of material existence.
Conforti situates the archetypal field theory he develops as a departure from the centuries-long mechanistic search for elementary particles as the foundational units of reality.
Conforti, Michael, Field, Form, and Fate: Patterns in Mind, Nature, and Psyche, 1999aside