It acts as an intimation of the meaning that lies hidden within a particular life, relationship, or historical moment. The special flavor of a synchronicity lies in its being, at one and the same time, a unique, individual event and the manifestation of universal order. Wrapped within the temporal moment, a synchronicity exhibits its transcendental nature. It is this relationship between the transcendent and the coincidental arrangement of mental and physical happenings that the synchronicity acquires its numinous meaning. Synchronicities represent a bridge between matter and mind and the concept of causality is clearly not appropriate to the world of mental events.
Causality therefore remains an idealization that can never be put into absolute practice.
Neils Bohr, for example, stressed that quantum theory had revealed the essential indivisibility of nature while Heisenburg's uncertainty principle indicated the extent to which an observer intervenes in the system he observes. So the old word observer simply has to be crossed off the books, and we must put in the new word participator. In this way we've come to realize that the universe is a participatory universe. Quantum theory and relativity had a revolutionary effect upon this Newtonian approach, not only in transforming the formalism of physics but also changing the worldview that was associated with it. It is only when causality is pushed to the limit that it is discovered that the actual context in which everything that happens in our universe is in fact caused by everything else.