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