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