I can write a long blog post explaining why I think this is a bad idea, but in all honestly the simple truth is that I'm afraid I would fail such a test and that would be embarrassing. So I make up some mumbo-jumbo about why the test doesn't correlate to good HN citizenship or some-such.
the better reason than being afraid of such a test is that in the long term everybody has their moments when they contribute a stellar bit of insight, even those who woule fail such a test. By testing for a certain 'level' you're throwing out the baby with the bathwater.
