> I wonder how far you are in crafting the specific user experience.

In terms of launch to the public? 96% complete user experience. A few days of work at this point. In terms of the grand scheme of things, difficult to guess how user interaction & input will alter everything over the coming years.

> And they like it when their great answers STICK. Data persistence (no "erasure after X days").

Contributions are persistent based on their quality. They can be replaced by higher quality content, or removed based on spam / abuse and similar. Otherwise, quality contributions never expire and never lose their value (they don't vanish a billion pages deep, never to be seen again).

> Can questions be tagged with multiple topics (robotics, business)?

Tags are evil (in my opinion) outside of very specific platform types and should largely be avoided. It's an extra distraction, extra friction, extra layer of complexity, extra effort. All negative for the majority of contributors. It can work ok on a site like Stackoverflow, where you have a highly technical audience that will happily nerd out with tags. Less technical persons (most people) will hate dealing with tags. If you can do a thing without tags, it's almost always better to do it without.

> How many sections do I see on the pretopic/posttopic pages (chrono index, logical-curated index, valuable-computed index)?

Logical curated indexing. Sections (content sections or areas, like categories, I assume) are intentionally avoided for the same reason as tags. I've gone to great effort to avoid complexity. I probably put as much time into that as anything, it requires a constant vigilance to avoid bloat and unnecessary 'features.' It's beautiful in its simplicity, hopefully editors will just get it thanks to that, it functions mostly in an obvious fashion (in part by limiting what can be done to a very clear, small set of actions; small, simple actions producing potent combined outcomes over time, that's the ideal).

> What can curators/moderators do? How do I become a curator/moderator?

Almost anything, in stepped fashion. You join to begin contributing (you can do this thing initially, but can't do that thing yet), and you contribute to acquire granular influence over most everything on the site. As you prove you're not a spammer, a bot, a belligerent asshole, a low quality contributor, you acquire mod 'rank' that gives you permissions and greater influence on content. I can pretty easily change the granularity of the whole system, to adjust as I see how editors impact things, where abuse is happening, or where I need less friction on contribution.

Ranking up is not automatic, so it can't be gamed in automated fashion (which would unleash wild abuse). It works on a system from E0 (editor level zero; read-only punishment) to E5 (me), and starts at E1; editors max out at E4. Once you're high enough you can upgrade other editors in a limited way, which is where I begin to delegate outward to the community of editors. I start it, act as benevolent dictator, try to shepherd a proper self-sustaining culture, and then hand it off increasingly over time.

It has a discussion system built into to its backbone, that enables editors to effectively communicate and give feedback to eachother during content building. It should also further community broadly speaking, including system feedback. I'm debating whether to eventually add an inbox editor-to-editor messaging system, I think I might with enough usage (early on it would just be negative complexity layered on top, one more thing to get in the way); I like the idea of all communication being viewable by editors on the platform, so that goes against the inbox concept.

It has a community hub system that shows all activity, all content creation, occurring on the system at that time or in the past. You can scope in on any given activity and it's all basically permanent record (unless there's something particularly bad that has to be literally removed, doxing for example).

> and make sure you are sufficiently innovating

You know what's interesting about the knowledge space right now? These days it's so barren and filled with piles of rotting corpses (most of which have been rotting for a decade and barely qualify as functioning services now), that that issue (make sure you're innovating) isn't something I've spent much time worrying about. What were the last interesting knowledge platforms? Quora 11 years ago, Stackoverflow 12 years ago. Maybe Genius as well (but it has contracted back into itself, back to lyrics). Wikipedia is almost old enough to drink. Few are doing anything in the space. There's no money in it (better to chase enterprise SaaS or fintech), so VCs aren't very interested (every decade or so they collectively forget the past mistakes they made and fund a new round of knowledge landfills they'll run into the ground) - it's a wonderful time and opportunity because of all of that.

> 2. Determine your platform design direction/niche by simulating concrete examples (agriculture, Q: tutorials for starting a smallscale commercial fruit/vegetable farm?). I would like to hear your thoughts on how you currently want the site/curation to process/organize that example question.

It doesn't have sections (eg agriculture), it's not a niche service, and it doesn't do how-to questions or stand-alone question answering. This concept has never existed before at scale, it's unusual in its approach, and it'll immediately make sense. I don't know if editors will take to the knowledge format / approach, we'll see.

Let me frame it better: you don't ask questions on this service. You use questions.