can bring on psychic stress that may be much worse. Western 
specialist technology transferred to the Arab world in late 
Roman times released a furious discharge of tribal energy.

     The somewhat devious means of diagnosis that have to 
be used to pin down the actual form and impact of a new 
medium are not unlike those indicated in detective fiction by 
Peter Cheyney. In You Can’t Keep the Change  (Collins, London, 
1956) he wrote:

          A case to Callaghan was merely a collection of 
     people, some of whom,—all of whom—were giving  
     incorrect information, or telling lies, because 
     circumstances either forced them or led them into the 
     process.
          But the fact that they had  to tell lies; had  to give