The reality is that there are individuals and corporations who are willing to say anything to serve their personal interests. Whether it’s an opinion, a pitch or a big data analysis, information can be skewed to influence an agenda. Gerd Gigerenzer, director of the Centre for Adaptive Behaviour and Cognition at the Max Planck Institute for Human Development in Berlin, is on a mission to make everyone more “risk savvy”, by using simple rules to make better decisions.