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