I get that HN has a policy to allow duplicates so that duplicates that were missed for arbitrary timing reasons can still gain traction at later times. I've seen plenty of "[Duplicate]" tagged posts, and have just seen this as a sort of useful thing for readers (duplicates may have interesting info, or seeing that the dupe did or did not gain traction also gives me info). But maybe I am missing something here, particularly etiquette-wise?

The only reason why this is helpful is because humans have natural biases and/or inverse of AI biases which allow them to find patterns that might just be the same graph being scaled up 5 to 10 times.

It is a tool, and there always needs to be a user that can validate the output.

I get where you are coming from here, but, in my opinion, no, this is not part of peer review (where expertise implies preconceptions), nor for really anything humans do. If you ignore your pre-conceptions and/or priors (which are formed from your accumulated knowledge and experience), you aren't thinking.

A good example in peer review (which I have done) would be: I see a paper where I have some expertise of the technical / statistical methods used in a paper, but not of the very particular subject domain. I can use AI search to help me find papers in the subject domain faster than I can on my own, and then I can more quickly see if my usual preconceptions about the statistical methods are relevant on this paper I have to review. I still have to check things, but, previously, this took a lot more time and clever crafting of search queries.

Failing to use AI for search in this way harms peer review, because, in practice, you do less searching and checking than AI does (since you simply don't have the time, peer review being essentially free slave labor).

Of course that makes it harder for people outside to penetrate but this also depends on the culture of the specific domain and there's usually people writing summaries and surveys. Great task for grad students tbh (you read a ton of papers, summarize, and by that point you should have a good understanding of what needs to be worked on in the field and not just dragged through by your advisor)

However, there are still big issues with how these peers perform reviews today [1].

For example, if there's a scientifically arbitrary cutoff (e.g., the 25% acceptance rate at top conferences), reviewers will be mildly incentivized to reject (what they consider to be) "borderline-accept" submissions. If the scores are still "too high", the associate editors will overrule the decision of the reviewers, sometimes for completely arbitrary reasons [2].

There's also a whole number of things reviewers should look out for, but for which they neither have the time, space, tools, nor incentives to do. For example, reviewers are meant to check if the claims fit what is cited, but I can't know how many actually take the time to look at the cited content. There's also checking for plagiarism, GenAI and hallucinated content, does the evidence support the claims, how were charts generated, "novelty", etc. There are also things that reviewers shouldn't check, but that pop up occasionally [3].

However, you would be right to point out that none of this has to do with peers doing the gatekeeping, but with how the process is structured. But I'd argue that this structure is so common that it's basically synonymous with peer review. If it results in bad experiences often enough, we really need to push for the introduction of more tools and honesty into the process [4].

[1] This is based on my experience as a submitter and a reviewer. From what I see/hear online and in my community, it's not an uncommon experience, but it could be a skewed sample.

[2] See, for example: https://forum.cspaper.org/topic/140/when-acceptance-isn-t-en...

[3] Example things reviewers shouldn't check for or use as arguments: did you cite my work; did you cite a paper from the conference; can I read the diagram without glasses if I print out the PDF; do you have room to appeal if I say I can't access publicly available supplementary material; etc.

[4] Admittedly, I also don't know what would be the solution. Still, some mechanisms come to mind: open but guaranteed double-blind anonymous review; removal of arbitrary cutoffs for digital publications; (responsible, gradual) introduction of tools like LLMs and replication checks before it gets to the review stage; actually monitoring reviewers and acting on bad behavior.

The arXiv and the derivative preprint repositories (e.g., bioRxiv) are other good initiatives.

However, I don't think it's enough to leave the content review completely to the community. There's are known issues with researchers using arXiv, for example, to stake claims on novel things, or readers jumping on the claims made by well-known institutions in preprints, which may turn out to be overconfident or bogus.

I believe that a number of checks (beyond plagiarism) need to happen before the paper is endorsed by a journal or a conference. Some of these can and should be done in a peer review-like format, but it needs to be heavily redesigned to support review quality without sacrificing speed. Also, there are things that we have good tools for (e.g., checking citation formatting), so this part should be integrated.

Plus, time may be one of the bottlenecks, but that's partly because publishers take money from academic institutions, yet expect voluntary service. There's no reason for this asymmetry, IMO.