The range of opinions which you access by posting a question like this on HN can have more value than the rationale page on the Clojure website.

That is to say, the reason for asking a question like this is not always laziness.

Might be true of the rationale page, but http://clojure.org/state is far more insightful than anything you will find in your average HN thread.

I wouldn't have recommended the rationale if he had asked "Why do YOU care about Clojure." Not knowing anything about him other than his self-confessed lack of effort, I thought it best to point him to some source material, not tell him what suits ME (which he didn't ask anyway). Also, no fair someone else getting karma for posting the link to the rationale. I left it out in hopes that the lazy questioner would lift at least one finger in his quest for Clojure knowledge (no, not THAT finger).