" Only when it comes to explaining psychic phenomena of a minimal degree of clarity are we driven to assume that archetypes must have a nonpsychic aspect. Grounds for such a conclusion are supplied by the phenomena of synchronicity, which are associated with the activity of unconscious operators and have hitherto been regarded, or repudiated, as 'telepathy' etc. Scepticism should, however, be levelled only at incorrect theories and not at facts which exist in their own right. No unbiased observer can deny them. Resistance to the recognition of such facts rests principally on the repugnance people feel for an allegedly supernatural faculty tacked on to the psyche, like 'clairvoyance'. The very diverse and confusing aspects of these phenomena are, so far as I can see at present, completely explicable on the assumption of psychically relative space-time continuum. As soon as the psychic content crosses the threshold of consciousness, the synchronistic marginal phenomena disappear, time and space resume their accustomed sway, and consciousness is once more isolated in its subjectivity. We have here one of those instances which can best be understood in terms of the physicist's idea of 'complementarity'. When an unconscious content passes over into consciousness its synchronistic manifestation ceases; conversely, synchronistic phenomena can be evoked by putting the subject into an unconscious state (trance). "

― C.G. Jung , On the Nature of the Psyche