Flying Saucers and an Uncertain World

"Human beings shape their perceptions according to their beliefs", writes John Gray, not the other way round. He says people "will persuade themselves to believe almost anything, no matter how far-fetched, if it enables them to preserve their view of the world". He asks how we can best come to terms with the realisation that the world is frighteningly unpredictable.

Producer: Adele Armstrong.