Great Filter

Great Filter is the civilizational-risk frame invoked in 03.莱博维茨的赞歌：要有光，哪怕废土之上 to interpret [[CanticleForLeibowitz|《莱博维茨的赞歌》]]. The hosts use it to ask whether civilizations may tend to destroy themselves after developing powers such as nuclear weapons, before they develop stable moral and political capacity to survive those powers.

In this wiki, the concept is grounded by the literary case rather than by a technical astrobiology source. It connects the novel’s repeated nuclear disasters to Civilizational Self-Destruction Cycle: the danger is not one bad generation alone, but a recurring mismatch between intelligence, tool power, political ambition, and moral restraint.

Key Claims

• Catastrophic technology can become a civilizational threshold rather than only a weapon category.
• A society can preserve and rediscover knowledge while still failing to preserve the judgment needed to use it safely.
• The novel’s space-bound preservation plan keeps the question open: self-destruction may be probable, but continuity remains possible.

Connections

• Civilizational Self-Destruction Cycle - main wiki concept this page supports.
• [[CanticleForLeibowitz|《莱博维茨的赞歌》 / A Canticle for Leibowitz]] - source case.
• Post-Apocalyptic Civilization Preservation - possible response to civilizational filtering.
• Apocalyptic Thinking - doom frame that the source turns into a responsibility question.
• Civilizational Optionality - broader resilience frame for keeping future paths open.