Jonathan, I am not sure yet that you know what comprises my shorthand 'consensus' on anthropogenic global warming, by my own reckoning. I appreciate your tangle with the arguments given at the last two links above: It looks like you followed links on to review methodology of the research by James Powell that gave this image at the Scientific American site: The graphic was introduced this way by SA's bitchy blogger Ashutosh Jogalekar: Several items of note in your review give me this vib