Thanks for that last note, it's been my argument for a while and I've had a few discussions with people on that point, e.g., <https://news.ycombinator.com/item?id=40849927>. I'll try to remember this comment to share for those cases.

I'll occasionally note recent prior posts which aren't dupes on account of minimal discussion (< 20 comments, generally), just because I remember those appearances and wasn't immediately sure myself whether or not the present submission counts as dupes or not. E.g., <https://news.ycombinator.com/item?id=33186713>, <https://news.ycombinator.com/item?id=41099760>, <https://news.ycombinator.com/item?id=31864872>, <https://news.ycombinator.com/item?id=41002384>, and <https://news.ycombinator.com/item?id=39242203> all below limits, <https://news.ycombinator.com/item?id=33942714> just over the 1 year threshold.

And for multiple posts on a given topic see: <https://news.ycombinator.com/item?id=41422938> (the indefagitable ChrisArchitect called the dupe, I explained it).

2nd chance queue can also cause confusion, generally not dupes: <https://news.ycombinator.com/item?id=29071219>.