A hellish existential catastrophe (sometimes called a hyperexistential catastrophe^[1]^[2]) is a catastrophe that not only destroys humanity's long-term potential but also creates negative value on an astronomical scale.

Further reading

Althaus, David & Lukas Gloor (2019) Reducing risks of astronomical suffering: a neglected priority, Center on Long-Term Risk, August.

Ord, Toby (2020) The Precipice: Existential Risk and the Future of Humanity, London: Bloomsbury Publishing, ch. 6, fn. 14.

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