Where does sentimental value come from? Why did Angela throw out her childhood journals? And would Mike wear Hitler’s sweater?  SOURCES:Jeffrey Galak, professor of marketing at Carnegie Mellon University.John Irving, author.Marie Kondo, professional organizer and consultant.Paul Rozin, professor of psychology at the University of Pennsylvania.Yang Yang, research scientist at the Institute of Behavioral Research at Texas Christian University. RESOURCES:"Experiences Endure," by Angela Duckworth (Character Lab, 2022)."Study Finds That THESE Are the Most Valued Family Heirlooms," by SWNS Staff (SWNS, 2021)."Micro Wave: How 'Bout Dem Apple...Seeds," by Thomas Lu, Madeline K. Sofia, and Brit Hanson (Short Wave, 2021)."Sentimental Value and Its Influence on Hedonic Adaptation," by Yang Yang and Jeffrey Galak (Journal of Personality and Social Psychology, 2015)The Life-Changing Magic of Tidying Up: The Japanese Art of Decluttering and Organizing, by Marie Kondo (2010)."A Real-Life Version of the Hitler’s Sweater Experiment," by David Berreby (Big Think, 2010)."The Makings of the Magical Mind: The Nature and Function of Sympathetic Magical Thinking," by Carol Nemeroff and Paul Rozin (Imagining the Impossible: Magical, Scientific, and Religious Thinking in Children, 2000)."Operation of the Laws of Sympathetic Magic in Disgust and Other Domains," by Paul Rozin, Linda Millman, and Carol Nemeroff (Journal of Personality and Social Psychology, 1986). EXTRAS:"How Do You Connect With Someone You Just Met?" by No Stupid Questions (2023)."Do You Savor or Gobble?" by No Stupid Questions (2022)."Why Do We Hoard?" by No Stupid Questions (2020).The Twilight Saga, by Stephanie Meyer (2005-2020).A Prayer for Owen Meany, by John Irving (1989).