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Putting carbon into the atmosphere much easier than removing it, I don't see how this could ever happen

I've seen people make this comment before, and I usually just dismiss it because it seems so absurdly unlikely. But is there any grounds to that fear?

Technically if it expands and runs in a carbon dioxide surplus for long enough and they maintained it for as long as thr process was viable. But it is currently a facepalm worthy seriously bad extrapolation. Like looking at carbon nanotube production assuming extrapolating exponential growth rates indefinitely and concluding that there will be a serious carbon shortage when production rises so high that every year mass equivalent to entire world's biomass is produced.

what about a cycling synergy between digging oil and reclaiming it. A kind of circular two sided market.