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