ABSTRACT
People who report stuff chiefly airline pilots and ground staff cannot be quite right in the head! What is worse, most of these stories come from America, the land of superlatives and of science fiction. The Ufo reports may seem to the sceptical mind to be rather like a story that is told all over the world, but differs from an ordinary rumour in that it is expressed in the form of visions, prefer the term 'vision' to 'hallucination', because the latter bears the stamp of a pathological concept, whereas a vision is a phenomenon that is by no means peculiar to pathological states. Visionary rumour is closely akin to the collective visions of, say, the crusaders during the siege of Jerusalem, the troops at Mons in the First World War, the faithful followers of the pope at Fatima, Portugal, etc. Ufos are not to be confused with meteorites or with reflections from so-called 'temperature inversion layers'.
