To be fair to Cunningham, I don't think he was proposing "post the wrong answer" as a
strategy.
I believe -- although I may simply be glossing his point with my own experiences -- that he was making a comment about human nature. And it's 100% true that on most of the internet, ten people will de-lurk and go through a complex registration process for the simple pleasure of telling you how wrong you are, where only one person (or nobody) would
volunteer the information if you simply asked politely.
I'm seeing this in a sort of enhanced and sharpened way in the blog world nowadays. Blogs have become old media, most people do their casual internet chit-chat on something like
FaceBook, and so there are few people left who comment on blogs in the chatty and casual way that they used to. Except for a few very special blogs that have managed to build and maintain valuable commenter communities around them, blog comments are empty except for spam, hatefulness, and the very special people who post whenever you make a mistake to tell you how wrong you are.
Permies, of
course, is not like that. But the human impulse is still there. I did it yesterday. I probably wouldn't have had more to say about the osage-oranges-as-hedge-trees sub-thread in this
thread until someone posted a very awesome comment that contained one statement at sharp odds with my own
experience. He was not "wrong" of course; he's in a different place with different animals and the same tree growing under different conditions. It's just that I didn't imagine I had more to say on the topic until somebody posted an observation that was at odds with my own (and I remembered that I even had a photo of mine to share).
So I would say -- if I'm not being too kind to myself -- that even Cunningham's Law can work for the good in a community with sufficient goodwill.
As for the rest of the internet? That vast cesspit of anonymous hatred and rage, love it so very much though I do anyway? My own theory to explain Cunningham's Law is that some people feel like they are "scoring points" or "winning" whenever they can point out an error, however trivial. It actually seems to make them feel good about themselves. For many, the little pulse of pleasure is intensified if they get to be rude about it. It's never "I'm pretty sure Albania didn't have jet fighters in World War II" if it can be "LOL you dumbnut, stop eating paste and learn to check your facts before you post." That part, I still don't have a theory to explain.