For all your abuse, you have said nothing here to negate Meg's claims about the inherent irreversibility of mutually intersecting and reinforcing runaway feedback loops. To take one example, the permafrost is melting worldwide, and releasing huge quantities of methane--not only the methane locked in the frozen soil, but also the fossil methane beneath the soil (this was in a NOVA program I watched last night). This means that even if we stopped using fossil fuels worldwide tomorrow (which we cannot, of course) the release of all this methane in the permafrost will trigger a runaway feedback loop of heating far beyond our ability to control or reverse it.