alt Hacker NewsThe point is that making it work on Earth is orders of magnitude easier than making it work on Mars (or wherever). And by that I don’t mean that it’s easy by any stretch, but that establishing a self-sustaining colony on another planet is so much harder. In addition to the extremely challenging extraterrestrial environment (much more challenging than anything we have on Earth, including in the case of terrestrial nuclear catastrophe), all the problems that we have on Earth due to human nature will travel with us to any other planet if we don’t manage to solve them here.
>> The point is that making it work on Earth is orders of magnitude easier than making it work on Mars (or wherever)
I disagree.
There are folk who know the physics and the engineering of putting a colony in, say, the Moon. That knowledge is theoretical to an extent, since we haven't done it before. But we don't need any new physics or even radically new engineering. So, you get a bunch of engineers, give them 10% of the West's budget, and you are good to go. It should be said that whatever it costs to put a self-sustaining colony outside of Earth will be an investment. Even if, for whatever reason, you can't trade heavy commodities with that settlement, you are creating a blueprint. Next time somebody wants to spend $XXXXXXX in weapons or a trade war, they may consider to instead use your blueprint and go somewhere where they can live the way they want.
Now think about some other problem, like say, avoiding a nuclear war with Putin. You could give him Europe or a chunk of it an hope he would be sated. Or you could try to forcibly remove Putin from power. If you succeed, you would have turned his entire nation into a decided enemy of the West for at least a century, not less willing to use nuclear weapons. You could invade Russia--again, risking nuclear annihilation in the process--, occupy the country and destroy their nuclear stock. That's going to be 30% of the West's budget at least, and a huge human toll. The reconstruction effort will be 20% of the West's budget for many decades, and you will need to rebuild that country or their resentment will cost you dearly. What about China and Taiwan, and a few decades from now, China vs Australia and China vs India? What about global warming and ecological collapse?
I think you are failing to see the staggering complexity of "making it work on Earth", and the fact that we only need to fail once.