For the second part of our conversation between cognitive psychologist and bestselling author Steven Pinker and academic and podcaster David Runciman, who teaches politics and history at Cambridge University, we rejoin the discussion with the two looking at the roots of skepticism. This interview first appeared on Intelligence Squared in early 2019 at the time of the publication of Pinker's book, Enlightenment Now: The Case for Reason, Science, Humanism, and Progress. We’d love to hear your feedback and what you think we should talk about next, who we should have on and what our future debates should be.  Send us an email or voice note with your thoughts to podcasts@intelligencesquared.com or Tweet us @intelligence2.  And if you’d like to support our mission to foster honest debate and compelling conversations, as well as ad-free podcasts, exclusive bonus content, early access and much more, become a supporter of Intelligence Squared today. Just visit intelligencesquared.com/membership to find out more.  Learn more about your ad choices. Visit podcastchoices.com/adchoices