In his biography of Geller, "Uri: A Journal of the Mystery of Uri Geller" (1974) Puharich claimed that with Geller he had communicated with superintelligent computers from outer space. According to Puharich, the computers sent messages to warn humanity that a disaster is likely to occur if humans do not change their ways. The psychologist Christopher Evans, who reviewed the book in the "New Scientist", wrote that although Puharich believed every word he had written, the book was credulous and "those fans of Geller's who might have hoped to have used the book as ammunition to impress the sceptics . . . will be the most disappointed of all." James Randi has written that the biography contained "silly theories," but was "both a boost and a millstone to Geller."