"Metacybernetics" is a concept with a small handful of Google hits, some of which appear to be obscure research papers and some appear to be metaphysical crackpottery on blogs.

I think it's worth considering that the theories you're familiar with are incredibly niche, have never gained any foothold in mainstream discussions of system dynamics, and it's not wrong for people not to be aware of them (or to choose not to mention them) in a post addressed at general audiences.

Further, you just missed the opportunity to explain these concepts to a broader HN audience and maybe make sure that the next time someone writes about it, they are aware of this work.

Cybernetics was the birthing place of neural networks. Hardly niche.

I don't think commenters should be expected to provide full overviews of topics just to inform others. Parent gave plenty of pointers beyond metacybernetics, all of which are certainly discoverable. If you are curious, read about it. It's not the responsibility of random strangers to educate you.

Metacybernetics is the only obscure word on that list, and it refers to all of the first-order cybernetics, second-order cybernetics, etc.

You missed the opportunity to ask a simple question - what is metacybernetics? - and decided everything on that list was just as niche.