acausal connecting principle
Synchronicity stands as one of the most contested and generative concepts in the depth-psychology corpus. Jung introduced the term—formally defined as the simultaneous occurrence of two meaningfully but not causally connected events—to address a persistent gap in the causal-mechanistic account of nature: that certain coincidences, too improbable to dismiss as mere chance and too meaning-laden to reduce to energy transfer, demand a complementary explanatory principle. The concept traverses multiple registers simultaneously: clinical (meaningful coincidences observed with patients), epistemological (the limits of causality as a universal law), cosmological (acausal orderedness as a property of the universe itself), and cross-cultural (resonances with the Chinese Tao, the I Ching, and pre-modern correspondence theory). Von Franz extends Jung's narrower formulation toward a broader metaphysics in which synchronicity is a subspecies of acausal orderedness, itself encompassing mathematical constants and physical discontinuities. Pauli's collaboration lends the concept a physics-derived legitimacy, while critics such as Braude raise the problem of objective versus subjective meaning-attribution. Tarnas situates synchronicity within a tradition of qualitative cosmology stretching from Chinese pattern-thinking to astrology. The central tension throughout the corpus is whether synchronicity names a genuine ontological principle or remains a heuristic label for events that resist, but do not ultimately escape, causal reduction.
Synchronicity designates the parallelism of time and meaning between psychic and psychophysical events, which scientific knowledge so far has been unable to reduce to a common principle.
Jung provides his canonical definition of synchronicity, distinguishing it from causality and grounding it in the empirical observation of meaningful coincidences that share no causal connection but are linked by equivalence of meaning.
, The Structure and Dynamics of the Psyche, 1960thesis
The meaningful coincidence or equivalence of a psychic and a physical state that have no causal relationship to one another means, in general terms, that it is a modality without a cause, an 'acausal orderedness.'
Jung expands synchronicity from a description of individual coincidences to a cosmological principle—acausal orderedness—that encompasses mathematical constants and physical discontinuities as expressions of the same underlying structure.
, The Structure and Dynamics of the Psyche, 1960thesis
Synchronicity is no more baffling or mysterious than the discontinuities of physics. It is only the ingrained belief in the sovereign power of causality that creates intellectual difficulties.
Jung argues that resistance to synchronicity is epistemological rather than empirical, rooted in an unreflective commitment to causal universalism that modern physics has already undermined.
, The Structure and Dynamics of the Psyche, 1960thesis
He called this 'synchronicity', which he defined as 'the simultaneous occurrence of two meaningfully but not causally connected events', and in 1951, after many years in which he felt reluctant to inflict such an eccentric notion on the public, he published his ideas.
Clarke reconstructs the genealogy of the synchronicity concept, tracing it to Jung's personal observations, clinical experience, and acquaintance with quantum physics, and locating its formal publication in the 1951 monograph.
, Jung and Eastern Thought: A Dialogue with the Orient, 1994thesis
synchronicity in the narrow sense is only a particular inst[ance] ... Even in individual cases that have no common denominator and rank as 'curiosities' there are certain regularities and therefore constant factors.
Von Franz argues that Jung's narrower definition of synchronicity must be expanded, as regularities within ostensibly unique coincidences point toward a more general principle of acausal orderedness.
, Psyche and Matter, 2014thesis
Synchronicity, or 'acausal orderedness,' is a principle underlying cosmic law. 'Into this category come all acts of creation, a priori factors such as the properties of natural numbers, the discontinuities of modern physics, etc.'
Stein synthesizes Jung's cosmological extension of synchronicity, presenting acausal orderedness as a universal principle of which human experiences of meaningful coincidence are a special, psychically mediated case.
, Jung's Map of the Soul: An Introduction, 1998supporting
We should rather see synchronistic phenomena in terms of the simple actuality or suchness of a contingence that cannot be reduced any further, that is, in terms of an acausal modality.
Von Franz addresses the linguistic challenge of describing synchronicity, arguing that because language is causally structured, the phenomenon must be approached as an irreducible contingency rather than explained in causal terms.
, Psyche and Matter, 2014supporting
synchronistic events form only momentary special instances in which the observer stands in a position to recognize the third, connecting element, namely the similarity of meaning in the inner and outer events.
Von Franz clarifies the relationship between synchronistic events and acausal orderedness, identifying meaning-recognition by the observer as the critical third element that distinguishes synchronicity from merely constant natural regularities.
, Psyche and Matter, 2014supporting
a connection of meaning is present—a gathering of birds means mythologically that souls are coming to take someone away. This corresponds to a belief found throughout the world, and in this example something of like meaning in fact takes place externally.
Von Franz illustrates synchronicity through a clinically and mythologically grounded case, demonstrating how meaning—here, archetypal death symbolism—constitutes the connecting element between inner anticipation and outer event.
, Psyche and Matter, 2014supporting
The primitive as well as the classical and medieval views of nature postulate the existence of some such principle alongside causality. Even in Leibniz, causality is neither the only view nor the predominant one.
Jung situates synchronicity within a long intellectual history of acausal principles—from magical correspondence and sympathy through Leibniz—arguing that causal exclusivism is a specifically modern, and provisional, epistemological commitment.
, The Structure and Dynamics of the Psyche, 1960supporting
Meaningful coincidences—which are to be distinguished from meaningless chance groupings—therefore seem to rest on an archetypal foundation.
Jung links synchronistic events to the activation of archetypes, arguing that the archetypal constellation provides the structural and affective ground for the occurrence of meaningful coincidence.
, The Structure and Dynamics of the Psyche, 1960supporting
assumed that the same living reality expresses itself, but not causally, in the psychic as well as in the physical state. Jung called this hypothetical underlying 'same reality' unus mundus.
Von Franz explains how Jung's concept of the unus mundus serves as the metaphysical substrate for synchronistic phenomena, positing a unitary reality that expresses itself simultaneously in psychic and physical registers without causal mediation.
, Psyche and Matter, 2014supporting
Jung observed the occurrence of synchronistic events only when an archetype was activated.
Von Franz reinforces the clinical-empirical basis of Jung's synchronicity theory by noting his consistent observation that archetypal activation is a necessary precondition for synchronistic occurrences.
, Psyche and Matter, 2014supporting
In all probability, then, the first result had itself been a meaningful coincidence, in other words a synchronistic phenomenon! The archetype of the coniunctio or marriage had been activated in Jung's psyche—it had been in an 'excited state.'
Von Franz recounts Jung's astrological experiment as a reflexive demonstration of synchronicity: the statistically anomalous first result was itself synchronistic, produced by the emotional-archetypal excitation of the experimenter.
, C.G. Jung: His Myth in Our Time, 1975supporting
A synchronicity exists between the life of Christ and the objective astronomical event, the entrance of the spring equinox into the sign of Pisces. This led to the problem of synchronicity, which I discussed in my paper 'Synchronicity: An Acausal Connecting Principle.'
Jung traces the intellectual pathway from his historical-astrological reading of the Christ symbol in Aion to the formal elaboration of the synchronicity principle, revealing the cosmological scope of the concept.
, Memories, Dreams, Reflections, 1963supporting
the Tao is more or less the cosmic meaning at each moment. Thus we should say: the total meaningful moment of time that lies behind all appearances is the Tao.
Von Franz draws an explicit parallel between Jungian synchronicity and the Chinese concept of Tao as the totality of meaning at any given moment, framing synchronicity within a cross-cultural philosophy of meaningful time.
, Psyche and Matter, 2014supporting
Things behaved in particular ways not necessarily because of prior actions or impulsions of other things, but because their position in the ever-moving cyclical universe was such that they were endowed with intrinsic natures which made that behaviour inevitable for them.
Tarnas contextualizes synchronicity within Chinese correlative cosmology and Needham's concept of 'mysterious resonance,' establishing pre-modern intellectual precedents for Jung's acausal connecting principle.
, Cosmos and Psyche: Intimations of a New World View, 2006supporting
Pauli, who published his work on Kepler along with Jung's essay, examines Jung's synchronicity principle sympathetically... He emphasized its possible significance for the concept of biological evolution.
Von Franz documents the reception of synchronicity among physicists, particularly Pauli's sympathetic engagement and his extension of the concept's implications to biological evolution and the archetypal significance of mathematical structures.
, Psyche and Matter, 2014supporting
Jung confined himself out of prudence to speaking of a transcendent cosmic background (unus mundus) so as not to prejudice further research into the synchronicity principle.
Von Franz addresses the theological implications of synchronicity's cosmic background, explaining Jung's deliberate terminological restraint in postulating the unus mundus rather than invoking specific metaphysical or religious frameworks.
, Psyche and Matter, 2014supporting
if the causal principle is only relatively valid, then it follows that even though in the vast majority of cases an apparently chance series can be causally explained, there must still remain a number of cases which do not show any causal connection.
Jung establishes the epistemological space for synchronicity by arguing that the relativization of causality in modern science logically implies the existence of genuinely acausal events that cannot be reduced to undiscovered causes.
, The Structure and Dynamics of the Psyche, 1960supporting
It was not philosophy or religion or even psychology, but rather the physical sciences themselves that shattered the absolutism of the causal principle.
Hoeller historicizes the philosophical preconditions for synchronicity, arguing that the collapse of causal absolutism in modern physics—not metaphysical speculation—opened the conceptual space Jung's principle was designed to occupy.
, The Gnostic Jung and the Seven Sermons to the Dead, 1982supporting
Primitive peoples still think synchronistically today; that is, for them there is no such thing as a meaningless accident.
Von Franz situates synchronistic perception within a comparative anthropological frame, arguing that pre-modern cultures maintain a worldview in which all events are potentially meaningful, a stance that parallels Jung's principle.
, Psyche and Matter, 2014supporting
'cross-connection' of events cannot be explained causally, then the connecting principle must lie in the equal significance of parallel events; in other words, their tertium comparationis is meaning.
Jung articulates the logical structure of synchronicity: where causal explanation fails, the only demonstrable link between parallel events is their shared meaning, which serves as the tertium comparationis of the connection.
, The Structure and Dynamics of the Psyche, 1960supporting
First there is a preexistent image (trigram); then a copy of this takes shape in corporeal form. What regulates this process of imitation is called a pattern.
Von Franz draws on Chinese cosmological thought—particularly the I Ching's concept of preexistent patterning—as a structural analogue to Jung's synchronicity, linking archetypal images to the emergence of outer events.
, Psyche and Matter, 2014aside
We must give up at the outset all explanations in terms of energy, which amounts to saying that events of this kind cannot be considered from the point of view of causality, for causality presupposes the existence of space and time in so far as all observations are ultimately based upon bodies in motion.
Jung draws on Rhine's ESP and psychokinesis experiments to argue that precognitive phenomena render energy-based causal explanations incoherent, providing empirical grounds for the synchronicity hypothesis.
, The Structure and Dynamics of the Psyche, 1960supporting
The paradoxical world of sub-atomic physics, with its accent on the rapid interaction and interchange of matter across the whole field, and relativity theory, resembles the psyche in its fluidity and 'symbolic' functions.
Samuels contextualizes Jungian psychology—including the synchronicity framework—within the broader convergence between depth psychology and modern physics, noting structural parallels that lend credibility to the acausal worldview.
, Jung and the Post-Jungians, 1985aside
Those of us who are heavily invested in signs are usually possessed by the belief that there are no such things as coincidences and that 'everything happens for a reason.'
Masters raises a critical counter-perspective, distinguishing the legitimate synchronicity concept from its pathological inflation into magical thinking and spiritual bypassing, in which every coincidence is ego-centrically appropriated as meaningful.
, Spiritual Bypassing When Spirituality Disconnects Us From, 2012aside