The courage demonstrated by ordinary individuals is helping to shatter prevailing attitudes and norms, leading to the emergence of a "new common sense." Yet in a data-driven world in which AI is poised to become ever more prevalent, human biases are being replicated in the form of algorithms. In what ways should algorithms be monitored if we are to prevent the reinforcement of inequality or the undermining of democracy? In this session, we ask the world's leading data expert what the Big Data era holds, and how we should prepare.