On Certainty was not published until 1969, 18 years after Wittgenstein’s death and has only recently begun to draw serious attention. I cannot recall a single reference to it in all of Searle and one sees whole books on W with barely a mention. There are however xlnt books on it by Stroll, Svensson, McGinn and others and parts of many other books and articles, but hands down the best is that of Daniele Moyal-Sharrock (DMS) whose 2004 volume “Understanding Wittgenstein’s On Certainty” is mandatory for every educated person, and perhaps the best starting point for understanding Wittgenstein (W), psychology, philosophy and life. However (in my view) like all analysis of W, they fall short of grasping his unique and revolutionary advance in des...