Short-term exposure to filter-bubble recommendation systems has limited polarization effects: Naturalistic experiments on YouTube - Naijia Liu; Xinlan Emily Hu; Yasemin Savas; Matthew A. Baum; Adam J. Berinsky; Allison J. B. Chaney; Christopher Lucas; Rei Mariman; Justin de Benedictis-Kessner; Andrew M. Guess; Dean Knox; Brandon M. Stewart (Proceedings of the National Academy of Sciences, 2025)