We leave data behind as we travel across the internet, our preferences and purchases transforming into a veritable goldmine of information for companies hoping to convince us to buy their new product or service. We often imagine this data mining and tracking as an invention of the so-called information age, but Victorians were tracking and mining data too. That's the focus of this episode of Stats and Stories with Dr. James Hanley Hanley is a professor of biostatistics in the Faculty of Medicine at McGill University. His work has received several awards including the Statistical Society of Canada Award for Impact of Applied and Collaborative Work and the Canadian Society of Epidemiology and Biostatistics: Lifetime Achievement Award.