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RE: $10k Home Built in Under 24 Hours Using 3D Printing Vulcan Printer
yea not cost efficient for square footage where space is a premium, but multi stories I think takes better building material, so more expensive. Ultimately I imagine land cost would be a major factor. Seems like lots of vacant land aross planet, but i imagine landlords want to force people into existing urban areas.
We need farmland to feed the population, and personally I think we need some forests and wilderness as well - for recreation, for the sake of the nature itself, ecosystems and biological diversity. Either we need to stack up people (high-rise apartments) or we need to become fewer people. How much area would we need for the population of Beijing if everyone was supposed to have a house with some land around? Not to forget that a sprawled population needs lots of areas for roads as well.
I'm all for biodiversity and wilderness, sure stacking could be good, but won't the structures eventually need to be replaced? I just think the cheapest structures are single stories, or at least not sky scrapers, we probably could fit all the worlds population in a super tall building if we wanted to, I just think we still have plenty of space.