Just after I posted that question, I started driving home, and on the drive I thought of your answer. I think I'm starting to ask the right questions when I'm programming in Haskell. Like redundancy and bloat is a sure sign that a more witty expression is available, and that I should consult the typeclasses. 

Second, I am not used to the implications of laziness, so it took me a while to hit on your solution because I keep thinking you have to map something over the whole list, and that if you only want to map it over the head, you are stuck. 

You can use 'map' also, instead of 'fmap', right? Is 'map' just 'fmap' for lists?

D

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