From: tehom@REMOVEpanNOSPAMix.com   
      
   steve.breslin@gmail.com writes:   
      
   [...]   
      
   > My concern is that children of deprecated ("replaced") key/path-sets   
   > might waste computation time (and memory space) by unnecessarily   
   > propagating deprecated information. Even if we choose the next node to   
   > expand based on the shortest distance of any path in its key/path-set,   
   > we still risk propagating deprecated key/path information when the   
   > deprecated key/path is not the shortest one in its key/path-set. If,   
   > however, we propagate only the shortest-path element in the   
   > shortest-path key/path-set, I think this is no longer a problem.   
      
   Ah, I see.  Your solution looks good to me.   
      
      
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   Tom Breton, the calm-eyed visionary   
      
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