We captured some of the most memorable moments of the 2019 edition of the Friends of IHES gala, titled “Game Theory: The Science of Strategy”.More than 150 guests joined Michael R. Douglas, President and Chairman of Friends of IHES, and Emmanuel Ullmo, Director of IHES, at the Harvard Club of New York City on November 5 to hear about and discuss game theory. The subtleties of this fascinating topic were illuminated by Constantinos Daskalakis (MIT) and Neil Chriss (Omnis Quantitative), while author Sylvia Nasar (A Beautiful Mind) hosted the evening.