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2. Bennett, J. G. (1991). Hazard: The risk of realization. Bennett Books.
3. Carney, M. (2020). Values and the tragedy of the horizon. BBC Reith Lectures.
4. Gardener, J. (2003). Biocosm: The new scientific theory of evolution – Intelligent life is the architect of the Universe. Inner Ocean.
5. The Tragedy of the Commons