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