Often we lose Blogs/HN Threads because we forgot to bookmark them or for any other reason. You can post description about the threads here. Other people can try to help the author find the articles. Additionally, Since people forget most of the things they read but they still remember ( or are trying to remember) the posts mentioned here, the posts are bound to be very interesting.
Tips on what you can/should mention while trying to find a thread -
1. Add a vague Timeline when it was written/posted here. 2. If you remember anything about the author, mention it. 3. You can mention what kind of discussions happened in HN Threads of the topic. 4. Write whatever you remember about the blog.
I'm submitting the threads I want to find below as an example.
2. This was also posted 6-8 months ago. Scientists create a machine in which light always goes off 1 sec before we press a button. The mechanism was that when the button is pressed, it travels back in time for 1 sec and turns on the light. By this experiment, people slowly realized that their actions are not their own and started going into Coma like stillness. The author was asian version of Nick bostrom.