Back to where this came from, my view is that this is an education issue - tutorials tend to focus on lazy, functional techniques, and not on efficiency.
But the material is available, so people *can* learn. It just needs some effort (but possibly more than it should...)
Can anyone suggest some good tutorials, papers, or books to read for learning how to reason about laziness, specifically, time and space complexity? I seem to remember that Richard Bird's Introduction to Functional Programming book has a chapter or so on this subject, but what other material would anyone recommend for trying to understand how to write efficient, lazy algorithms? Maybe in the spirit of updating Wikis and such, we can collect this sort of material together... Jared. -- jupdike@gmail.com http://www.updike.org/~jared/ reverse ")-:"