The post compares space colonization and terrestrial lifeboats as X-risk mitigation strategies, concluding that space colonies may offer better long-term survival guarantees despite higher costs. Longer summary

This post discusses the merits of colonizing space versus creating terrestrial lifeboats as strategies to mitigate existential risks (X-risks) to humanity. The authors, Nick D and Rob S, compare the costs, feasibility, and effectiveness of off-world colonies and Earth-based closed systems. They explore the challenges and benefits of each approach, including isolation from global catastrophes, technological requirements, and potential for research and economic opportunities. The collaboration concludes that while terrestrial lifeboats are more cost-effective and easier to implement, space colonies might offer better long-term guarantees for human survival due to the difficulty of abandoning them. Shorter summary