2 KB) Description A triangular graphic representing a "hierarchy of disagreement" from clear refutation to mere vituperation, based on the essay "How to Disagree" by Paul Graham . Date 5 September 2008 ( 2008-09-05 ) Source hand-coded by uploader; based on Image:Graham's Hierarchy of Disagreement.jpg by 'Loudacris' (originally from blog.createdebate.com ) Author