Delegated to @ecotrain: 200 SP.
"We urgently need to provide the world with a working alternative model to life, that works. No need to work if you don't want to. Everyone would have a home and what they really need, and the focus of life would shift totally from acquisition to expression. That is to say, people would be unburdened by the stress of trying to survive and compete. We would shift our entire way of thinking from competition to team playing. Collaborations would happen naturally, and creativity would take on a whole new meaning. When the motivations behind our actions are based on expressing our natural passions, without any concern of profit, success, or dominance.. we enter into a new world of existence.''
To a large extent, this is the ideal of how science is done. People focus then on what seems to be worth doing. Aesthetically or looking at the future.
Also how internally a startup operates so far as founders are concerned. (They are not paid.) I suspect much of the superior productivity of startups come from here rather than anything else.
To a large degree it's also ideal distributed algorithms based around message passing of requests basically work.
Some areas in the world which this can tried now rather than later, agree, based solely on the resources of voluntary community support. The arcology concept has always been interesting, but the flaw was always that it was imagined as some kind of space-ship-like, profoundly expensive structure which nearly no entity would have any good reason to pay the costs of. Doing the same thing bottom up may become feasible the same way deep learning of the 1956 type became feasible in 2006, by costs simply going down more than any other change. Oh, and the houses you've made/designed look impressive without extreme cost.