rules for travel      
             (esp. biking)            
                                        
                                          
                   one                  
          "detour before retour"          
 if not  necessary, you should never find 
 yourself  on  the same  part  of a  road 
                  twice.                  
                                          
                   two                  
            "the kalmar rule"             
 you get one  glance at  google  map  per 
 person  and  evening.  you can  not show 
 your  map   search   to   anybody  else. 
                                          
                     
 "rules are  meant to  make  you think  a 
 bit   before   breaking   them"   -   t. 
         pratchett (paraphrased)          
                                          
                     
           see also: a nice path