“HTML over the wire” sounds like a joke or a parody that managed to make the homepage of Hacker News — that’s how web pages have always worked! — but I think there’s something interesting going on here. If you were building HTML from scratch and wanted all of the features we take for granted today, particularly when it comes to fully dynamic and reactive web apps, I imagine this is what you’d come up with.

I remember making a note of this when Hey was announced¹, I certainly wouldn’t bet against this crew.