> I didn't mean to imply otherwise, though I would say they are one and the same thing in the long term. For humanity to survive and spread beyond our planet we

> I didn't mean to imply otherwise, though I would say they are one and the same thing in the long term. For humanity to survive and spread beyond our planet we need civilization and we've used up so many natural resources that I'm not sure we could rebuild one to match what we have today without them. There's no point in spreading beyond our planet if we cannot create a fully sustainable planetary civilization first. The energy expenditures of GOING to another STAR and terraforming a planet in its orbit are many magnitudes more than it takes to create a paradise here, on Earth, at least from the perspective of energy requirements of modern countries.