 Philosophers who defend fallibilism about knowledge will be untroubled by this outcome (see Hetherington 2001; Reed 2013; Brown 2018). Others may lament the fading of certainty as an epistemic ideal while arguing that its abandonment is nevertheless better than going down to epistemic defeat (Pasnau 2017). A hardy few may continue to press ahead, like Descartes, in the attempt to “scale the heights of human knowledge” (PW 1, p. 11; Klein 1981).