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