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For informed skepticism about the Warmist faith, talk to any geologist. They tell us that the climate has been continually changing, and massively, for the entire four billion years of Earth's history. Comparatively little of this period has been affected by human industry of any sort.
I'm responding to idiots like this guy on page 2, but he didn't invent that really dumb argument.
The point is, the Earth has warmed and cooled in the past. No one argues that. To make an argument that this means humans can't affect the Earth's climate not only doesn't follow, it's plain stupid.
Your questions are utterly unrelated to the subject I was addressing.