AUTHOR=Wiepke Axel , Miklashevsky Alex TITLE=Imaginary Worlds and Their Borders: An Opinion Article JOURNAL=Frontiers in Psychology VOLUME=12 YEAR=2021 URL=https://www.frontiersin.org/journals/psychology/articles/10.3389/fpsyg.2021.793764 DOI=10.3389/fpsyg.2021.793764 ISSN=1664-1078