In early 2017, Scientific American published a symposium on the threat that ‘big nudging’ poses to democracy. Big Data is the phenomena whereby governments and corporations collect and analyse information provided by measuring sensors and internet searches. Nudging is the view that governments should build choice architectures that make it easier for people to pick, say, the more fuel-efficient car or the more sensible retirement plan. Big nudging is the combination of the two that enables public or private engineers to subtly influence the choices that people make, say, by autofilling internet searches in desirable ways.