This was a workshop held on 31 May, 2019 at the Oxford Martin School, as a celebration of Jerry Ravetz’s career and work. It was sponsored by the Institute for Science, Innovation and Society at Oxford University. Information about the event is available at https://www.insis.ox.ac.uk/event/science-post-normal-perspectives, and background materials at https://www.insis.ox.ac.uk/resources.