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