What they finally concluded is that a synchronicity is a powerful expression of a dual-aspect monistic world in which the mental and material domains have decomposed from a more basic One World but still retain a clear sign of their shared ground in how they correspond or speak to one another in unforgettable ways. They are not connected through any cause. They are connected through meaning. Hence the common human response to them: a sense of uncanniness or deep meaning that cannot be quite located.