"So you’re arguing that they’re environmentally unsustainable, rather than, say, economically unsustainable."
"Climate change will not be stopped by throttling the economy. That would only lead to marginal slowing of it and the total incapability of ever fixing it. It is castrating civilization. The only way is massively expanding the economy and technological progress in order for it to become a trivial challenge. China will be net neutral before any serious western economy."
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