A propos of sections of subtraction, and thence to sections of other noncommutative operators, as a Haskell newbie I was surprised to discover (the hard way!) that (< 0) and ((<) 0) mean different things. I had typed (< 0) when I meant to type ((<) 0). No compiler errors, of course, and I had a devil of a time finding that bug. My initial reaction was that (< 0) should be an error and you should have to write ((>) 0); now I realize that the section notation is more fundamental, since (<) itself is actually a "double section". And of course I should have written (> 0) anyway; it's probably my lisp background that tripped me up. But is there any way this could be made less confusing? Do any of the online tutorials warn against this sort of mistake, and I just missed it? Mike