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