Yup and I'm glad you know that because I wish it got more attention! (I'm a mod here, sorry that wasn't clear.) The reason I post those links to past related threads about specific stories is that many readers like to look up old comments on the same topics. Often there are surprises and gems in there.

Oh and there's no implication that the story shouldn't be reposted—reposts are fine after a year or so (https://news.ycombinator.com/newsfaq.html).

Btw, the 'past' link in the top bar shows you (more or less) what the front page looked like on a particular day. To find threads about specific past stories, it's best to use HN Search at the bottom of the page.

You understand that you just lectured the moderator of HN on how to use the website?

HN already provides a link to profile bios. Check out the %username% link on top of the comment. /s

TBH Dang’s bio has only implicit connection to The fact that he is a moderator here, but most people of course know.

Thanks, but "past" link does not show past discussions of the posted article, just older states of HN.

> Thanks, but "past" link does not show past discussions of the posted article, just older states of HN.

No, not really. It shows a list of past submissions, which of course include the corresponding discussions.

Take a look: https://hn.algolia.com/?query=System%20Design%20Primer%3A%20...

That's the search box at the bottom of the page. I get that "hn.algolia.com" link when I search for the title of the article. Otherwise I don't see a "past" link. Maybe there is, I don't know.

There are two completely different “past” links on the page, hence the confusion. One shows previous days, other previous posts.

I never realized there was an article scoped 'past' link.