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