XPost: uk.legal, uk.politics.drugs   
   From: newsREMOVE@hbar.co.uk   
      
   > The dog barked, prompting officers to search Mr Saville's pockets.   
      
   Dogs have no ability to detect that someone is carrying drugs.  It is an   
   illusion.  The officer with the dog pretends that the dog has indicated a   
   positive response as a pretext to carrying out a search.  The officer   
   guesses on the basis of how someone looks, particularly if someone looks   
   worried because they believe the dog actually does have the ability to sniff   
   drugs.   
      
   > to search for probable cause using dogs when dogs are wrong four times out   
   > of five is, I believe, not right.   
      
   Identical results can be obtained with a magic box that people are told   
   lights up when it detects drugs, but is actually triggered by the officer   
   surreptitiously pushing a button.   
      
   Derren Brown could manage a lot better than one in five.   
      
   --   
   Mark Lewis, North Somerset   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)