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