Yes, it's interesting philosophically, watching the evolution of the house. There's millions of them of them now - those little boxes for living in. I wonder when the transition from roundhouse to rect. house occurred ?
The round stone sheepfolds, maybe three hundred years old, are the last vestiges of the roundhouse tradition - as I see it. I remember a lecture by an archaeologist where he told us that the space within the circular structure had defined uses - this bit was the kitchen, this bit the sleeping area - and that that layout was similar within other roundhouses - like we nowadays have the kitchen beside the back door and the sleeping area in a loft ...