"Brandon S. Allbery KF8NH" <allbery at ece.cmu.edu> writes: > Laziness is a double-edged sword. Perhaps the following page from Haskell Wiki would serve to enlighten more: http://haskell.org/haskellwiki/Foldr_Foldl_Foldl%27? This really made it clear to me how laziness can sometimes be a bad thing.