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