[dang]

There are a lot of differences—you just have to squint to see them. I think a better solution would be software to let the community collaborate on building a related-links list. That could also naturally expand to including related URLs to articles on the same topic, even if they didn't get a previous HN conversation.

[dpifke]

I want a related-comments tool, so that when anyone posts a comment on a story about Tesla Autopilot or nuclear energy, they can see links to the 10,000 unoriginal comments mirroring what they wrote (again).

[dang]

There's something to that idea, because the art of optimizing a site for curiosity has mostly to do with avoiding repetition, and the most repetitive comments ought to be the most machine-learnable.

https://hn.algolia.com/?dateRange=all&page=0&prefix=true&sor...

https://hn.algolia.com/?dateRange=all&page=0&prefix=false&so...

https://hn.algolia.com/?dateRange=all&page=0&prefix=false&so...