That’s a reasonable analogy, but I think the more novel and interesting thing about this is that it’s: - A declarative mechanism to relate one element to anoth

That’s a reasonable analogy, but I think the more novel and interesting thing about this is that it’s: - A declarative mechanism to relate one element to another - With a range of semantics for declaring interactivity invoked through their relationship - At a high level, with explicit guarantees of consistent accessibility and UX In a lot of ways, this looks a lot like what people describe when they wish for more HTML and less JS. (Except for the extreme-minimalist version of that which rejects web interactivity altogether.)