I just tested it. I picked something[1] off of /newest that was 4 hours old, and created a new submission with that as the link and the same title. It seemed li

I just tested it. I picked something[1] off of /newest that was 4 hours old, and created a new submission with that as the link and the same title. It seemed like it submitted, but on closer look, HN had actually just taken me to the old post. The poster was still the previous person, the time was still the previous submission time. Funnily though, it actually upvoted it. I hadn't upvoted it before, but submitting it caused me to automatically upvote the other person's post. I guess I could try it with different ages if you want. [1] https://news.ycombinator.com/item?id=30185632 https://news.ycombinator.com/item?id=30185632