Data plays a big role in our world. But how do companies use it to influence our lives? Dr. Siva Vaidhyanathan, Robertson Professor in Media Studies at the University of Virginia, answered this question in a lecture at the Sheldon Museum of Art Wednesday as a part of the 2015 “Humanities on the Edge” series. The lecture was titled “The Operating System of Your Life and How Tech Companies and Big Data Govern Your Identity, Knowledge and Refrigerator.”