"A forum that would prevent continuing previous discussions wouldn't be a forum any more, just another useless waste of time social media (ok, HN isn't too bad, but it's due to the very high quality of the posting here)."

Agreed. By observation and logic what you say has to be true. What's so stupid and absurd about this situation is that it's so wasteful of ideas and human effort. If there was some way of measuring the efficiency of forums then we'd find that it'd be very close to zero.

If ideas are lost or lose promenance because previous discussions are halted then we cannot easily build on them. That's why we see so much stuff unnessarily duplicated across the web. Not only do posters waste time and effort through either not having seen an earlier identical post (it having already been lost in internet noise) or that they repost elsewhere to try to continue the previously lost thread.

The trouble with reposting is that not all of the important or the most relevant posts from the previously closed forum will make it into any new one.

Again, this wastes the time of both posters and those who'd benefit from reading the posts. In effect, the whole damn forum edifice has to be one of the most waseful and inefficient mechanisms humans have ever devised.

As I've already said in another longwinded post much of the blame falls on the designers of forum software, which when looked at from a global perspective in what it's trying to achieve then we find that it's essentially utter shit. That's to say it's not fit for purpose, and given the evidence one cannot objectively or honesty come to any other reasonable conclusion. It's also hard to figure out why we haven't seen much more of a serious debate over the serious limitations of forums and forum software.

What's happened with forums is that we reached a hiatus some decades ago when it comes to thinking about about how posters' information should be presented; it seems that developers then put any further improvements in the too-hard basket and there's been essentially no further development since then (likely because they can't see much of a buck in it for the effort it'd involve).

We need to rethink forums in terms of information - subject, topic etc., and in much better ways of building on earlier information without losing the historical narrative whilst simultaneously not diminishing posters' efforts. When it comes to posters, it's important that the hierarchical order of their posts be maintained if for no other reason than to show their resonses - their progression in thinking etc. - for this too is both valuable and important information.

As I see it, to accomplish even modest improvements in forum presentation then we ought to be rethinking the problem in radically difficult ways such as reformulating forum software in terms of a relational database structure which over time would be supplemented by AI - AI's purpose being to keep the most important and relevant posts as the most accessible, i.e.: the most easy and quick to find.

Surely, I'm not alone in thinking this way as it's so damn obvious.

You're right about HN. There's an enormous myriad of valuable information in the many thousands of HN's posts and it's a terrible shame that so much of this information has just gotten lost in internet noise by virtue of the way stories age (and that's just the beginning of the matter). Moreover, it's made worse by the fact that anyone searching for information that happens to be inside forum posts will find it difficult to do so given that search engines will have deranked the results by virtue that said information is already wallowing within the internet noise.

It's pretty terrible that one usually has great difficulty in just finding a HN story after it's aged several days. I've often wasted inordinate amounts of time trying to locate HN stories after I've failed to either save or bookmark them first time round.

Solving this ought to be a no-brainer for the HN team.

It seems to me that both HN's story listings and its forums are far too valuable to leave as they are. We users of HN's valuable service need to find ways in which we can make it even more valuable, useful and user-friendly.