I presume that if this got beyond some pretty sketches there would eventually be some kind of way to install new "verbs" and "nouns" and "modules", maybe even a place to go exchange money for interrelated collections of these things... How this would differ from "I downloaded Plunko 3D from the App Store" remains to be seen.

Sure, but what does that look like under this OS? The mock-ups don’t show anything more complicated Han messaging apps.

Other comments have stated that this is some student project of some sort. Like many other projects of this type it has failed to consider what most people actually do during the course of their jobs. Worse, it ignores what ‘nerds’ do on their computer while posting on a ‘nerd site’.

Oh yeah, all of that's very much undefined. Every attempt at a "humane" interface inspired by Raskin's post-Macintosh work always stops well before getting to that point.

There may be a much better world of human-computer interaction lurking in these sorts of ideas but getting out of forty* years of refinement of the window-icon-mouse-pointer paradigm, and forty years of building all sorts of tools and toys within it that are not designed to be decomposed into separate actions usable in any context, is a huge effort.

Or there may not, I feel like people have kept trying to do stuff like this over and over again and we just keep on ending up back in the world of monolithic apps that are entire toolsheds worth of tools, each with their own way to do the same things.

* or more, I am counting from the release of the original Macintosh, please feel free to add on sixteen more years if you'd prefer to count from Englebart's Mother Of All Demos, or forty more if Vannevar Bush's Xanadu feels like the place to put a stake in the sands of time and say "modern computing methods began here".

This is like seeing a new design for a custom forklift vehicle and asking what the 0-60 is.

No, it’s more like asking “sure it looks great, but how does it lift a pallet”