Synchronicity:

Wikipedia's explaination of Synchronicity is a word that Swiss psychologist Carl Jung used to describe the "temporally coincident occurrences of acausal events." Jung spoke of synchronicity as an "'acausal connecting principle'" (i.e. a pattern of connection that cannot be explained by direct causality) a "‘meaningful coincidence’" or as an "‘acausal parallelism’". Cause-and-effect, in Jung's mind, seemed to have nothing to do with it. Jung introduced the concept in his 1952 paper "Synchronicity — An Acausal Connecting Principle", though he had been considering the concept for almost thirty years.

Put plainly, synchronicity is the experience of two or more occurrences (beyond coincidentally) in a manner that is logically meaningful- but inexplicable- to the person or persons experiencing them. Such events would also have to suggest an underlying pattern in order to satisfy the definition of synchronicity as developed by Jung.

It differs from mere coincidence in that synchronicity implies not just a happenstance, but an underlying pattern or dynamic that is being expressed through meaningful relationships or events.

It was a principle that Jung felt encompassed his concepts of archetypes and the collective unconscious , in that it was descriptive of a governing dynamic that underlay the whole of human experience and history — social, emotional, psychological, and spiritual.

Jung believed that many experiences perceived as coincidence were due not merely tochance, but instead, suggested the manifestation of parallel events or circumstances reflecting this governing dynamic.

One of Jung's favourite quotes on Synchronicity was from Through the Looking-Glass byLewis Carroll, in which the White Queen says to Alice: "It's a poor sort of memory that

only works backwards."