When it suits his purposes, global warming hoax promoter Gavin Schmidt admits there is a "large amount of natural variability and almost infinite choice of metrics"

RealClimate: Steve Schneider’s first letter to the editor

Reading the Guccione op-ed (right, click for full size), it is immediately obvious that the rules for writing mendacious anti-science were discovered a long time ago. First, find some metric that you can use to indicate something is getting better – a cherry picked weather report, a pollution index in a specific town – it doesn’t really matter what, and because of the large amount of natural variability and almost infinite choice of metrics, one can always find something.