Foreword -- Preface -- Introduction -- "Fake news" and "truthiness" : the value of evidence in a post-truth world -- "Rarely pure and never simple" : truth, facts, and evidence -- "Given under my hand" : the nature of evidence -- "Talking knots" : the form of evidence -- "Let the other side be heard" : evidence, identity, and connection -- "The secrecy helped spread the disease" : evidence, justice, and rights -- "A mysterious and malleable thing" : evidence, memory, and narrative -- "Opinions embedded in math" : evidence, manipulation, and abuse" -- "Electronic records, paper minds" : evidence and assumptions -- "An arms race against the forces of fakery" : evidence and accountability.