The highly controversial "Benveniste affair" reported in "Nature" magazine, proving that water has a memory, is one of the most significant in the field of modern science. Beneviste believes that water retains the "memory" of molecules it once contained: if solutions of antibodies were diluted repeatedly until they no longer contained a single molecule of antibody, they still produced a response from immune cells. Jacques Benveniste's discovery not only radically questions scientific views but validates the claims of homeopaths that extremely dilute substances can have a physical effect on the human body. Not only does Beneviste's discovery question modern science but it also reopens the discussion that explores the whole psychology of scientific hostility to radical new ideas and the suppression of knopwledge in an authoritative manner.