“Jung worked both systematically and hermeneutically upon chance events in connection with the problems of synchronicity. This term refers to meaningful coincidences of psychic and physical events for which no satisfactory account can be given through the usual categories of causality, space and time. Jung considered synchronicity to be a principle equal to the other three and, like them, a part of nature. He found that synchronistic events happen mainly when instinctual (emotional, archetypal, symbolic) levels of the psyche are engaged.
“If the principle of synchronicity is another way of speaking about Pan, then we may also begin to understand why anyone occupied with this field of spontaneity, called parapsychology, becomes a renegade from the civilized order of rational men. As synchronicity is the devilish fourth principle, so Pan is the devilish shadow of our dominant archetypal Trinity. The integration of parapsychology into respectable science and psychology would then require a revaluation of Pan and a view of instinct and nature from his perspective. Until then parapsychology will tend to be cast in his shadow, a field of sentimentalities and natural religion, something at once comic, untrustworthy, obscure and lunatic.”
–W.H. Roscher, Pan and the Nightmare: Ephialtes–A Pathological-Mythological Treatise on the Nightmare in Classical Antiquity, & An Essay on Pan by James Hillman, 1972. Pp. lviii-lix. (James Hillman, “An Essay on Pan.”)