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