wall follower

( n.)

   A  person or algorithm that compensates for lack of sophistication or
   native stupidity by efficiently following some simple procedure shown
   to have been effective in the past. Used of an algorithm, this is not
   necessarily  pejorative;  it recalls `Harvey Wallbanger', the winning
   robot  in an early AI contest (named, of course, after the cocktail).
   Harvey  successfully  solved  mazes by keeping a `finger' on one wall
   and  running  till it came out the other end. This was inelegant, but
   it was mathematically guaranteed to work on simply-connected mazes --
   and,  in  fact,  Harvey  outperformed  more sophisticated robots that
   tried  to `learn' each maze by building an internal representation of
   it. Used of humans, the term is pejorative and implies an uncreative,
   bureaucratic, by-the-book mentality. See also {code grinder}; compare
   {droid}.

[glossary]