13th IFIP TC9 Human Choice and Computers Conference: “This Changes Everything” Poznan, Poland, 17th-21st September 2018 Conference Chairs: David Kreps, Kai Kimppa, Louise Leenen, Charles Ess Conference Theme Track Chairs: David Kreps and Charles Ess “I denied climate change for longer than I cared to admit. Not like Donald Trump and the Tea Partiers going ...