"Christopher K. Egan" wrote
You have proposed
dramatic new forms.... but you have not told us what they are or how
they are made....

Can this not be said of any advancements in the past?
Thomas Edison *conceived* the idea of the lightbulb with no knowledge of
what the key element shall be, the filament. He tried well over 1000
materials before he found that bamboo worked excellently. (in fact here at
the Fort Myers Edison Museum they have original bamboo filament light bulbs
that have been lit continuously since Edison was alive.)

A problem is identified and then a solution is discovered.
This is what Per is professing.
The limitations (problem) with *Lego* style construction, and a solution,
3DH.
Though he has not identified the steps taken to get from Lego to 3DH his
vision is totally possible in the future.
Now, having said that, I am not married to Pers concept as it is largely
speculation at this point and I am a naturally skeptical person.
I do believe however that the way we now do construction will continue to
advance, to become more streamlined and less complicated, less costly, in
the future. Who knows, maybe our grandkids will live in self sufficient
extruded 50' diameter x 200' long gravity tubes hovering 500' in the air in
the late 21st century as all the land will be used up, the resources and
animals gone and geopolitical turmoil will rule the earth.

and this makes them either meaningless or ....at
best.... undeveloped as architectural proposals.

Pers ideas are not meaningless except to those that lack vision and
imagination, and I am not sure his ideas can be limited to the
*architectural* field.