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If the resources required to communicate are planet-scale, then it would require comparable cooperation to build it. Maybe that gets you somewhere. And then may

If the resources required to communicate are planet-scale, then it would require comparable cooperation to build it. Maybe that gets you somewhere. And then maybe you choose to communicate in a way that requires massive resources at the receiver end too... Not a full answer to your question, but this gets you somewhere. A more compelling answer to me is this; civilizations that don't learn how to cooperate at the scale of their planet will destroy or deplete it before they are able to build something of this scale. We have some evidence for this suggestion here on Earth...

yreg 3y ago
Planet scale cooperation utilizing planet scale resources is possible in a planet scale military dictatorship as well. Actually it sounds easier and more plausible than in a free society. > A more compelling answer to me Agreed, but that's just the usual great filter idea.
- Towaway69 3y ago
  > Actually it sounds easier and more plausible than in a free society. It doesn't have to be but with our current mindset, I would agree. If imagining a cooperative society is hard then it is even harder to imagine the technology that would arise out of such a society. Edit: for me the open source software movement is a good example of what a cooperative society could do. In 40 years we have gone from room size computers to mobile device that can communicate with anyone on the planet and have access to all the worlds knowledge. This would never have been possible IMO without millions of developers sharing their knowledge.