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I wonder what general spaceflight will look like, or if it will ever appear. I suppose there's already unmanned amateur spacecraft (CubeSats), but manned will probably require either the infrastracture to make orbit cheap (space elevators) or for people to be living in space where gravity isn't an issue. Extensive and reliable automation would also be necessary. Space traffic management will be crazy. Any thoughts anons? How long till doctors and lawyers can buy their own ion-powered zipcraft?