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