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    Societal Collapse


    A Living Literature Review
    • Who shapes global risk?

      An overview of actors

      Posted on 2025/09/29

      Existential risk is not something static which lives outside of humanity. It is something humans shape. This can happen directly, when it comes to things which are created by humans, like nuclear weapons or indirectly, like if we sufficiently prepare for major volcanic eruptions or not. This means actors can... [Read More]
      Tags:
      • Influence Factors
      • Coordination Problems
    • Inequality all the way down

      Structural demographic theory and the United States

      Posted on 2025/09/03

      Life feels more rough, because it is. At least this is what I took as one of the main messages from Peter Turchin’s book “End Times: Elites, Counter-Elites, and the Path of Political Disintegration”. In it Turchin takes us on a grand tour of his structural demographic theory and how... [Read More]
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      • Overview Post
      • Summaries
    • The people's history of collapse

      How dominance hierarchies doom societies

      Posted on 2025/08/05

      When we study societal collapse, we typically examine it through the lens of elites. Using the records and remains left by emperors, nobles, and the literate classes who had the most to lose when their world ended. But what if we’ve been asking the wrong question all along? After years... [Read More]
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      • Overview Post
      • Summaries
    • Manipulating the global thermostat

      Climate change, nuclear winter, and stratospheric aerosol injections

      Posted on 2025/05/30

      Life on Earth depends on a stable climate. Both the biosphere and our global society are calibrated to a narrow band of habitability. The global temperature is governed by a lot of interacting systems, but it mostly boils down to how much energy from the Sun reaches the planet’s surface... [Read More]
      Tags:
      • Influence Factors
      • Climate Change
    • What could go wrong?

      A list of lists of large catastrophes

      Posted on 2025/04/25

      For this post I aim to essentially create a little repository of catastrophic risk lists, so other people can find those more easily and get an overview of how groups of experts with different backgrounds categorize and evaluate risks. The motivation behind both this post and the articles I will... [Read More]
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    Florian Ulrich Jehn  •  2025

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