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> everyone holds their own pet definition.

I guess climate change doesn't exist either then. If by everyone you mean everyone except science, then sure, but that's why we have the scientific consensus...

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"Climate change" may very well be meaningless. It was, after all, adopted for use in public messaging due to its predecessor, "global warming", never transcending meaninglessness, so there is precedent for the general population failing to find convergence in a shared understanding. If they couldn't grasp the intent beyond "global warming", it is equally likely they haven't been able to grasp the intent behind "climate change".

But it is a term that definitely exists. We can find it used often in the literature. Hell, we can find one of those instances in your very own comment... How on earth did you reach the conclusion that it doesn't exist? You didn't give that one any thought at all, did you?

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