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