One way of defining synchronicity is a coincidence that is meaningful. Some examples of coincidence are, of course, nothing more than that, i.e., the simultaneous occurrence of two or more events on the basis of pure chance. The psychologist Carl Jung said that there are different categories of synchronicity, for example, the relationship between an outer happening and an inner state, or the simultaneous occurrence of two outer events. By their very nature, examples of true synchronicity present a real challenge to the Newtonian worldview of cause and effect. 1991. 74 minutes.