20th Research Challenges in Information Science. Bridging the Gap: Enhancing Understandability in Information Science. Thomas Polacsek, Marcela Ruiz, Jolita Ralyté and Franck Ravat (Eds): Proceedings of the 20th International Conference on Research Challenges in Information Science (RCIS 2026). Toulouse, France, 26 - 29 May, 2026