Steven Pinker, Harvard psychologist and professor, discusses his new book, "Enlightenment Now: The Case for Reason, Science, Humanism and Progress."Paresh Upadhaya, Director of Currency Strategy at Amundi Pioneer, on how the dollar will perform going forward under a protectionist agenda, and his favorite FX trade for 2018.Beatrice Fihn, Executive Director of the International Campaign to Abolish Nuclear Weapons (ICAN), discusses a report that reveals what companies benefit from a new arms race.Vincent Piazza, Senior Equity Energy Analyst and Global Sector Leader for Bloomberg Intelligence, on oil, US shale overtaking OPEC, and what E&P companies will do with their excess cash.