That's because we don't have software, only humans, to detect when two different articles are about the same story. The humans take longer and only work some of the time.
Actually, if anyone knows how to write software to do that, I'd love to hear about it. It's not an easy problem.
By the way, submitters are supposed to do this work too. The guidelines ask: "Please submit the original source. If a post reports on something found on another site, submit the latter." This article was a clear case of one article reporting on another article. If you'd submitted the latter, then the software would have let you know it was a dupe.
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[ 4.4 ms ] story [ 19.4 ms ] threadActually, if anyone knows how to write software to do that, I'd love to hear about it. It's not an easy problem.
By the way, submitters are supposed to do this work too. The guidelines ask: "Please submit the original source. If a post reports on something found on another site, submit the latter." This article was a clear case of one article reporting on another article. If you'd submitted the latter, then the software would have let you know it was a dupe.
https://news.ycombinator.com/newsguidelines.html