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Sure but looking at the energy requirements of those systems it doesn't really start to make sense to deploy before you've seriously decorbanised your energy supply, which comes back to OP's remark. Why discuss these types of systems when we should be focusing on decorbanisation?

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> Why discuss these types of systems when we should be focusing on decorbanisation?

We should, but we don't do enough of that. So let's put efforts where they bring results - even if they'd theoretically bring more results elsewhere, in practice they don't.

In reality we do try to prevent atmosphere pollution from happening, we just don't do enough of it. Some others of us, who're not involved in this process may have better chances with other, less efficient for now but still useful approaches.

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