It was a success in the sense that we learned a lot. If anyone wants to know about that, a lot of it is in the explanations here:
https://hn.algolia.com/?dateRange=all&page=0&prefix=false&so...
https://hn.algolia.com/?sort=byDate&dateRange=all&type=comme...
Some good threads to start with might be https://news.ycombinator.com/item?id=21607844 and https://news.ycombinator.com/item?id=22902490.
These explanations have become pretty stable by now—stable enough that I repeat myself incessantly: https://hn.algolia.com/?dateRange=all&page=0&prefix=true&que...
*Edit: here's where we called it off: https://news.ycombinator.com/item?id=13131251
Maybe it pops up here because people have at least a modicum of hope that there will be a productive conversation even amongst the various downvote brigades?
I post political comments because even when they get downvoted to -4, they still end up with a long list of replies and sub-tangents in response to them. I think that's a healthy thing.
There's an interesting dynamic to this, btw. If HN manages to stay a degree or two more interesting than internet median [1], it attracts high quality users. That makes it a desirable audience. That makes a lot of people want to target this audience, so they blast it with rhetoric. Rhetoric isn't curious conversation and it thrives on repetition—so it makes HN worse.
In other words, to the degree that HN gets better, it gets worse. There's a cap on how good it can ever get [2].
[1] I'm not saying it's very good at this. But it's all relative, and what matters is outrunning the bear: https://news.ycombinator.com/item?id=25725436.