Re: [Haskell-cafe] I read somewhere that for 90% of a wide class of computing problems, you only need 10% of the source code in Haskell, that you would in an imperative language.

Well, try this: Go ask a random person how you add up a list of numbers. Most of them will say something about adding the first two together, adding the third to that total, and so forth. In other words, the step by step instructions.

You word the (hypothetical) question with a bias toward imperative thinking. You're asking "How do you do this action?" Why isn't the question "What is the sum of a list of numbers?", which is biased toward the declarative? John (who's glad he's not a social scientist)