It was marked as a duplicate because it was a duplicate of https://news.ycombinator.com/item?id=21344575, which spent over 14 hours on HN's front page and got over 200 upvotes.

Now there are three threads; those two and this one, which is currently on the front page. I'm happy to merge them, but am not sure which submission should win.

Edit: https://news.ycombinator.com/item?id=21343761 has the most substantive discussion of the fresh threads, so I guess we'll undupe that one and merge. Give me a few minutes because it's a bit tricky when there are more than two.

Edit 2: Ok, I've merged all the comments into the thread except for the ones which were explicitly about this post in a way that wouldn't make sense over there.