Well, whichever measure of IQ you want to use as a proxy for intelligence, it's plausible that the self-selected group of people who comment on HN is higher compared to the world population (oh, this includes me, too -- how embarassing). How much higher is an empirical question which is unlikely to be settled, although I would guess that your .01% is a bit of an overestimate.
The important point, though, is that "dichotomy" not the same as "contradiction". The contradiction between your estimate of the high intelligence of HN commenters and the, let's say, less-than-intelligent ideas sometimes expressed here can be explained by noticing that being somewhat smart doesn't make someone immune to having stupid ideas.
What, after all, is the minimal IQ beyond which one will never make a mistake?
> What, after all, is the minimal IQ beyond which one will never make a mistake?
I'd argue 0, in that a being completely incapable of even attempting thought would be unable to have an incorrect thought. But that's a bit of a reductio ad absurdum
As far as I can tell this is simply false. At https://creativecommons.org/retiredlicenses/ there is a list of "retired" (deprecated) legal tools, which does include a "Public Domain Dedication and Certification" but in the right column says "Replaced by two separate tools: the CC0 Public Domain Dedication and the Public Domain Mark." Furthermore, at the top of the page it says "CC will no longer offer these licenses via its license chooser or other mechanism for any future work" and if you click on the link (https://creativecommons.org/choose/) there is a "Want public domain instead?" link to https://creativecommons.org/publicdomain/ which prominently features the CC0 dedication.
I actually read through the OSI mailing list thread about the CC0 dedication once, and as far as I recall the OSI people (I think it was Bruce Perens) had reservations and eventually the CC side decided it wasn't worth pursuing, see https://opensource.org/faq#cc-zero for the OSI summary.
The important point, though, is that "dichotomy" not the same as "contradiction". The contradiction between your estimate of the high intelligence of HN commenters and the, let's say, less-than-intelligent ideas sometimes expressed here can be explained by noticing that being somewhat smart doesn't make someone immune to having stupid ideas.
What, after all, is the minimal IQ beyond which one will never make a mistake?