] Summary 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 2011-12-31 21:24 (UTC) Source hebrew version of Graham's_Hierarchy_of_Disagreement.svg by Hanan Cohen Author Graham's_Hierarchy_of_Disagreement.svg : Rocket000 derivative work: Hanan Cohen Permission ( Reusing this