warming can be caused by a vast multitude of variables. Why change of one of this vast multitude of variables made you nervous? One thing you are definitely wrong is about "baseline", which by your definition is natural forces. You don't know this baseline since you acknowledge you don't know those unknow natural variables. On the other hand, you talked like you know this baseline. That's why you are nervous when you compare current data to your baseline. That's very contradictory in your reasoning. Anyway, very incoherent response, Iggle.