Synchronicity

The word was coined by Carl Gustav Jung (1875-1961) from the Greek roots syn (with, together) and chronos (time). Jung used the term as early as the 1930s in his correspondence and lectures. He gave it a fully developed formulation in his essay Synchronicity, an Acausal Connecting Principle, published in 1952 in Naturerklarung und Psyche, co-written with the physicist Wolfgang Pauli. Jung wanted to name a type of coincidence that seemed to carry meaning, yet could not be explained by any known causal chain. The emblematic example is that of a patient who dreamed of a golden scarab while a rose chafer beetle tapped at the office window during the session.

Jung places synchronicity at the boundary of psychology and physics. His correspondence with Wolfgang Pauli, 1945 Nobel laureate in physics, attests to a joint effort to articulate psyche and matter. Jung borrowed from the Chinese Yi Jing, for which he wrote a preface in 1949, the idea of a causality through meaning. Synchronicity has been variously received: modern cognitive psychology, notably the work of Daniel Kahneman, explains it largely through perceptual biases (confirmation bias, frequency illusion). New Age spiritual currents have on the contrary made it a sign of the unity of the real and of inner guidance. Parapsychology has at times brought it closer to psi phenomena.

In contemporary divinatory practice, particularly tarot and the Yi Jing, synchronicity provides the most widely used conceptual frame for explaining the relevance of a reading. Rather than claiming a magical causality between the cards and the situation, one speaks of a meaningful mirroring: what appears makes sense because the querent's psyche and the spread participate in the same moment. On Tarotoui, synchronicity is documented among the founding concepts of modern divination. This Jungian reading is today the most common among tarot readers trained in depth psychology.

Synchronicity remains a controversial concept. Cognitive science favors an explanation through perceptual biases and apophenia (the tendency to see connections where there are none statistically). This does not invalidate the subjective force of the experience, which can be psychologically transformative, but it qualifies metaphysical claims. Note also that confusing Jungian synchronicity with popular signs of destiny is a simplification: Jung required a precise psychological meaning, not just any coincidence.