But, if memory serves, it still isn't nearly as warm as 1000 years or so ago.
Temperature changes over the millenia, even before any possible human contribution has been far larger, yet no one knows for certian what caused it. Until they can explain the reason for the historicly larger changes, then they don't know squat about how man might be affecting those natural changes in climate.
It's like we've observed the ocean for an hour, and then saying we know we can make a wave on the ocean, so therefore we must be causing the tide.
I think I am getting on, but you are by any measure OLD.