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In his seminal essay, Tragedy of the Commons (Science Magazine 1968), Garrett Hardin discusses the idea that humans instinctively act in their own self-interest with regard to a shared resource (a common). When these self-interests converge, they overwhelm the resource and it collapses. bear in mind, there is not direct "evil" to destroy the commons.
What you refer to as "green" I refer to as sustainable; either humanity exploits resources to the detriment of future generations or it doesn't. It IS all or nothing, there are no shades of grey.