On this, our 316th Evolutionary Lens livestream, we discuss health, science, and the Cartesian crisis as it relates to global events. First: a new paper finds that infection tends to lead to greater frailty in older people. This reverses the causality of Terrain Theory of Disease (frailty of the body leads to greater susceptibility of infection), and also provides support for a prediction made by Bret and his co-author Debbie Ciszek in the unpublished, longer version of their reserve capacity paper from 2002. Then: what we are seeing on our personal media feeds does not make us eye-witnesses to anything—not necessarily. Plato’s Cave of Mirrors means that we are all fed different media diets, and skills such as observation, discernment, and hypothesis generation, inherently fail when nobody can establish what is actually true. Recommendation: start comparing notes with other people as to what they are seeing, rather than what they think it means. ***** Our sponsors: NOBS: NOBS is doing a nationwide rollout into 917 Target stores. The full list can be found on http://nobsroutines.com. Caraway: Non-toxic, highly functional & beautiful cookware and bakeware. Save with Caraway’s cookware set, and visit http://Carawayhome.com/DH10 to for an additional 10% off your next purchase. Xlear: Xylitol nasal spray that acts as prophylaxis against respiratory illnesses by reducing the stickiness of bacteria and viruses. Find Xlear online, or at your local pharmacy, grocery store, or natural products store. ***** Join us on Locals! Get access to our Discord server, exclusive live streams, live chats for all streams, and early access to many podcasts: https://darkhorse.locals.com Heather’s newsletter, Natural Selections (subscribe to get free weekly essays in your inbox): https://naturalselections.substack.com Our book, A Hunter-Gatherer’s Guide to the 21st Century, is available everywhere books are sold, including from Amazon: https://amzn.to/3AGANGg (commission earned) Check out our store! Epic tabby, digital book burning, saddle up the dire wolves, and more: https://darkhorsestore.org ***** Mentioned in this episode: Ragusa et al 2026: https://academic.oup.com/biomedgerontology/advance-article-abstract/doi/10.1093/gerona/glag043/8497853 Gavazzi & Krause 2002: https://www.thelancet.com/journals/laninf/article/PIIS1473-3099(02)00437-1/fulltext New York Magazine article on Casey Means: https://nymag.com/intelligencer/article/casey-means-and-the-myth-of-the-root-cause.html Weinstein & Ciszek 2002: https://pubmed.ncbi.nlm.nih.gov/11909679/ Journalist Mizrahi on X (maybe): https://x.com/eliseevanews/status/2029700361297051829 *****