I feel like a closer approximation of what’s going on is that there are perennial discussion topics that people want to participate in when they see an opportunity (e.g. “battery technology continues to improve, but it’s rare that we see the results trickling down to consumer electronics.”)
But just having a forum with “evergreen threads” where people talk continuously about perennial topics, doesn’t seem to work out very well, as people tend to get bored of topics when nobody’s saying anything new.
People might want to participate in them, but they won’t bother if there’s no expectation that their comment will be seen, let alone replied to. Nobody wants to post to a “stale” thread; it’s a waste of effort. And, in a vicious cycle, nobody wants to read other people’s posts on a “stale” thread either, because “thread necromancy” is almost never done by someone with something of value to contribute.
“Post a link and comment about it” sites have stumbled upon a fix for the problem of perennial discussion topics becoming "stale": by having individual threads focused on news articles relevant to these perennial topics, rallying points are created, giving people an excuse/justification to resume the larger ongoing topic of conversation within the comments of the individual news item, with the expectation that others will also be doing so.
The news itself is important to this process, as it offers a promise that fresh content (i.e. comments with a novel thought backing them) might be injected into the ongoing topic due to the news; thereby giving people a reason to check out this particular resurrection of the topic, even if they’ve read previous threads “about” it before.
But it really only has to be a promise that someone else is going to contribute novel thought to the conversation. Most people don’t want to be the source of the novel thought themselves. They want to participate on one of the existing sides of the topic, using what they already knew about the topic going in. They want to try out a “famous” debate for themselves. (And, if there's something new to know, they seemingly want to learn it by being told off by someone who has read the news, and so now knows something they don't.)
So the news article itself has about the same effect on the volume of commenting on a site like this, as public news regarding a company’s value has on the volume of trading in a market. A dose of “the real thing” certainly causes a surge—but so does the expectation of it, whether you actually end up getting the real thing or not.
And, just like speculating on a stock doesn’t require any insider knowledge, commenting under one of the “traditional” positions on such a perennial topic doesn’t require that you read the news that prompted the resurrection.
You can't have a stock market without real signal; and yet the market will always be composed mostly of traders with no access to (or desire to access) real signal. You can't have a perennial discussion without news; and yet the comments will always be composed mostly of people who have no desire to access the news.
Many people seem to mistake the social purpose of these “post a link and comment on it” sites as actually being purely for discussing the content of the link. It’s possible to use such sites this way, but it’s not incentivized by the UX compared to the alternative discussed above. You usually need stringent community moderation if you want people to focus on the news itself.
A free UX design idea: if you want to build “a discussion forum for news topics in a domain”, then rather than endlessly cloning the Reddit/HN model, try building a hybrid of Reddit with a traditional discussion forum. I.e.,
1. start with a traditional discussion forum (thread-list view with threads sorted by last-posted time);
2. make it so threads aren't “bumped” to the top from regular posts in those threads;
3. add a special “news link” type of post, that users can make, which does bump the thread.
(Bonus ideas: scrape the news-links and so render the news-link's content inline in the thread. Have automatic "threadmark" navigation between the spans of posts delimited by these news-item posts. Make clicking the thread in the thread-list view navigate to the newest news-item post. Require moderators to approve news-items before the bump triggers, to avoid "redundant" bumps, to in turn increase users' faith in bumps translating to a real renewal of discussion.)
I imagine such a UX would work much better as a way to explicitly run continuous long-running discussions of news topics, as refueled by news links. One core benefit is that what would on Reddit be “previous threads” would on this forum be “the same thread”, and so people would (hopefully!) feel much less of a reason to recapitulate the exact same posts.
There is a value in rehashing previous conversations. Imagine if you were at a cafe, having an intellectual conversation with your friend while a GPT-12 butler listened. Every time you rehash a conversation that someone else had, GPT-12 butler interrupts and says "excuuuuse me sir, some permutation of this conversation has happened 2000 times on the internet. I will replay the top 3 of those. Please listen carefully, then proceed to tread new ground." I think that GPT-12 butler would be very annoying.
You might think that I'm making a strawman argument, because I'm certain you wouldn't like the interrupting GPT-12 butler either. However, the UX you proposed would sometimes feel just as constraining.
Participating in arguments, even if they aren't novel, is a cognitively enriching experience. Reading but not participating in those very same arguments, while enriching in its own way, is not a complete replacement. Furthermore, I feel that in order to argue at higher levels of abstraction (which new fields are biased towards), you should first participate in discourse at every preceding level of abstraction. Reddit and HN allow for that. They're not perfect, but I don't think that enforced meta-threads would be an improvement.
All that being said, I think that your "bonus" idea of hyperlinking discussion to relevant excerpts in the article, inline, can be singularly transformative.
But just having a forum with “evergreen threads” where people talk continuously about perennial topics, doesn’t seem to work out very well, as people tend to get bored of topics when nobody’s saying anything new.
People might want to participate in them, but they won’t bother if there’s no expectation that their comment will be seen, let alone replied to. Nobody wants to post to a “stale” thread; it’s a waste of effort. And, in a vicious cycle, nobody wants to read other people’s posts on a “stale” thread either, because “thread necromancy” is almost never done by someone with something of value to contribute.
“Post a link and comment about it” sites have stumbled upon a fix for the problem of perennial discussion topics becoming "stale": by having individual threads focused on news articles relevant to these perennial topics, rallying points are created, giving people an excuse/justification to resume the larger ongoing topic of conversation within the comments of the individual news item, with the expectation that others will also be doing so.
The news itself is important to this process, as it offers a promise that fresh content (i.e. comments with a novel thought backing them) might be injected into the ongoing topic due to the news; thereby giving people a reason to check out this particular resurrection of the topic, even if they’ve read previous threads “about” it before.
But it really only has to be a promise that someone else is going to contribute novel thought to the conversation. Most people don’t want to be the source of the novel thought themselves. They want to participate on one of the existing sides of the topic, using what they already knew about the topic going in. They want to try out a “famous” debate for themselves. (And, if there's something new to know, they seemingly want to learn it by being told off by someone who has read the news, and so now knows something they don't.)
So the news article itself has about the same effect on the volume of commenting on a site like this, as public news regarding a company’s value has on the volume of trading in a market. A dose of “the real thing” certainly causes a surge—but so does the expectation of it, whether you actually end up getting the real thing or not.
And, just like speculating on a stock doesn’t require any insider knowledge, commenting under one of the “traditional” positions on such a perennial topic doesn’t require that you read the news that prompted the resurrection.
You can't have a stock market without real signal; and yet the market will always be composed mostly of traders with no access to (or desire to access) real signal. You can't have a perennial discussion without news; and yet the comments will always be composed mostly of people who have no desire to access the news.