"have you considered that many (though granted not all) of the "junk" answers may due to the hacker mentality"What I find more interesting is that this thread has been allowed to survive rather than being downmodded. And that tells me that some influential HN'ers consider the responses to this survey meaningful - either individually or in aggregate. One of the often ignored aspects of HN is that to a meaningful degree it is an extension of people's workplaces. I find it handy to remember that when participating.
I rather doubt that the point of the survey is actually collecting data on HN'ers ages. Detailed demographic information about people on the internet is readily obtainable from other sources.
On the other hand, information about who is likely to "vandalize" HN is more difficult to collect and highly relevant, and this is the jist of PG's response as I read it. I couldn't really come up with a better term for crapping on a poll than "vandalize." The scare quotes are there because what is happening is normal internet behavior.
Perhaps the vandalism is somewhat invited by the absurdity of the youngest age and the quasi-absurdity of the oldest - does it really matter from an HN demographic standpoint to distinguish between those over 80 and those over 90 - both cohorts must have came to computing as adults.
Not that this excuses the behavior, and perhaps the invitation to vandalism is intentional because the wording and presentation of many attempts at data collection via ASK HN is awkward enough to invite meanness of which vandalism is one form.
[EDIT] Indeed, the creator of the poll claims to be studying quantitative psychology.