Beautiful, cheap, easy, fast, durable (fire- and earthquake-proof, "It will not rot, rust or decompose in water.", etc.) and regular folk can make them with "backyard-scale" foamers and construction technique.
Yeah they said concrete would end homelessness. It's not a technical problem, it's a people problem. Places that allow and encourage lots of dense, walk-able construction (like where I live) have low rent, places that don't do this have high rent no matter how cheap construction materials are.
Beautiful, cheap, easy, fast, durable (fire- and earthquake-proof, "It will not rot, rust or decompose in water.", etc.) and regular folk can make them with "backyard-scale" foamers and construction technique.