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Comment Re:Food (Score 1) 92

Biosphere 2 was an attempt at fully closed loop self-regulation. That doesn't work, and is not what is under discussion. The discussion is of using systems to maintain environments.

Production of oxygen is not remotely difficult. Not by plants, but again, industrial systems. Systems to make O2 from CO2 and/or water are TRL10. They exist, you can just buy them off the shelf. Same with reusable CO2 scrubbers (it's a very simple chemical process: cool = absorb CO2, hot = release CO2; they just cycle between cold and hot and whether they're connected to the input or output)..

You seem to have the idea that the proposal is just to have plants and humans life in harmony with no technology. If that were the actual proposal, I would agree with you. But that's not the actual proposal.

Comment Re:Venus is orders of magnitude easier to colonize (Score 1) 92

Yeah. Because if Mars' gravity is insufficient, and you'd have to live in rotating habitats anyways, then what are you even doing there, instead of being located e.g. on an asteroid where it's much easier to make a rotating habitat, where your surface is much more resource-rich, and where delivery and return of goods is much easier?

Venus, by contrast, I think few people doubt that its gravity would be sufficient for human life. Mars, it's *probably* enough, but it's not well studied. Moon seems like a coin toss at this point.

Comment Re:Venus is orders of magnitude easier to colonize (Score 1) 92

It's not entirely clear, but it's quite possible, arguably probable, that at least part of Venus's highlands involve fragments of ancient crust (the highlands also have milder conditions for exploration). Venus was Earthlike before Earth was, with vast warm oceans. There's also some arguments for life in the atmosphere based on gases that have been found, although I don't buy them (in the same way that I don't buy the same arguments for current surface life on Mars).

Comment Re:Economic terrorism (Score 1) 186

Republicans equate being pro-market with being pro-big-business-agenda. The assumption is that anything that is good for big business is good for the market and therefore good for consumers.

So in the Republican framing, anti-trust, since is interferes with what big business wants to do, is *necessarily* anti-market and bad for consumers, which if you accept their axioms would have to be true, even though what big business wants to do is use its economic scale and political clout to consolidate, evade competition, and lock in consumers.

That isn't economics. It's religion. And when religious dogmas are challenge, you call the people challenging them the devil -- or in current political lingo, "terrorists". A "terrorist" in that sense doesn't have to commit any actual act of terrorism. He just has to be a heathen.

Comment Re:You're addressing a very important detail (Score 2) 115

Nuclear Fission isn't cost effective ... _unless_ you price in the full eco-balance of electricity production. Then the numbers look significantly different and fission could just be a real thing once again. At least until renewables and energy storage have gained significant portions of the energy mix.

No. This is nonsense. Nuclear fuel production has a massive ecological impact. Nuclear only looks good when compared to coal. Stop doing that.

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