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