POWERLINE, John Hinderaker: In the debate about serious man-made global warming, there are two types of evidence. The first is the raw material of science, observation. The second is climate models created by alarmists for the purpose of generating scary scenarios. Anyone with the slightest acquaintance with science understands that observation (type 1) trumps theory (type2). Which is a serious problem for the warmists, since temperature records show that their models are wrong.