Yet at no point have the models, fine tuned to be reasonably accurate at short term weather forecasts been fine tuned to be accurate at predicting climate with any degree of accuracy, as there's been no chance to do so.If you run a large enough ensemble, and do the stats right, yes. Climate is much more predictable than weather.
"Climate is much more predictable than weather."
How do you know that?
Noone has ever tested the predictions, for all you or anyone else knows they could be completely and utterly wrong. It could be that climate is actually less predictable than weather. You can't say with certainty as there is no empirocal science to back that claim up.
By all means, cut your carbon emissions, change your lifestyle, encourage others to do the same for a whole raft of definite reasons (reducing reliance on fossil fuels and the associated price fluctuations, lower cost loving, more efficient living, lower impact on ecosystems, no risk of devastaging oil spills to fuel your life - whatever) but when you move to AGW and using weather models which can't predict more than a few days ahead to predict climate decades ahead and just "trust" that it is accurate, without any evidence to believe that is is accurate, you're into a whole different territory.