ADVERTISEMENT Nautilus Members enjoy an ad-free experience. Log in or Join now . Sociology A comic uses fluid dynamics to explain how groups of people move—and how that could help make large gatherings safer. November 6, 2024 Illustrated by Maki Naro Add a comment Sign up for the free Nautilus newsletter: science and culture for people who love beautiful writing. This article originally appeared in  Knowable Magazine. ADVERTISEMENT Nautilus Members enjoy an ad-free experience. Log in or Join now...