The worldwide rumour about Flying Saucers presents a problem that challenges the psychologist for a number of reasons. The primary question — and apparently this is the most important point — is this: are they real or are they mere fantasy products?
Jung frames the flying saucer phenomenon as a dual psychological-empirical problem, insisting the unresolved question of physical reality does not diminish its significance as a subject of psychological inquiry.
, Civilization in Transition, 1964thesis