I think architecture could be understood as the construction of realities, or the construction of worlds.
I don't really know what's going to happen 10,000 years from now. We've been biologically modern for, what, almost 200,000 years? Let's go back to the cave paintings: I think the moment that someone landed a charcoal on a wall to describe reality, that's language already - that happened on a vertical surface, which, even though they didn't build it, somehow we could understand it as architecture because there's a cavity that separates the inside and outside. That's 40,000 years in the past.
It is possible to construct small realities that contain political or philosophical responses, not necessarily just practical or economical responses.
