Christian Ruhl joins the podcast to discuss US-China competition and the risk of war, official versus unofficial diplomacy, hotlines between countries, catastrophic biological risks, ultraviolet germicidal light, and ancient civilizational collapse. Find out more about Christian's work at https://www.founderspledge.com  

Timestamps: 

00:00 US-China competition and risk  

18:01 The security dilemma  

30:21 Official and unofficial diplomacy 

39:53 Hotlines between countries  

01:01:54 Preventing escalation after war  

01:09:58 Catastrophic biological risks  

01:20:42 Ultraviolet germicidal light 

01:25:54 Ancient civilizational collapse