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