I do not understand the new dupe detection system. The same user posted the same link 10 hours ago: <a href="https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=10368978" rel="nofollow">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=10368978</a>