Singleton (global governance)
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In futurology
Futurology
Futures studies is the study of postulating possible, probable, and preferable futures and the worldviews and myths that underlie them. There is a debate as to whether this discipline is an art or science. In general, it can be considered as a branch under the more general scope of the field of...

, a singleton is a hypothetical world order in which there is a single decision-making agency at the highest level, capable of exerting effective control over its domain, and permanently preventing both internal and external threats to its supremacy. The term seems to have been first defined by Nick Bostrom
Nick Bostrom
Nick Bostrom is a Swedish philosopher at the University of Oxford known for his work on existential risk and the anthropic principle. He holds a PhD from the London School of Economics...

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An artificial general intelligence having undergone an intelligence explosion could form a singleton, as could a world government armed with mind control and social surveillance technologies. A singleton need not directly micromanage everything in its domain; it could allow diverse forms of organization within itself, albeit guaranteed to function within strict parameters. A singleton need not support a civilization, and in fact could obliterate it upon coming to power.

A singleton has both potential risks and potential benefits. Notably, a suitable singleton could solve world coordination problems that would not otherwise be solvable, opening up otherwise unavailable developmental trajectories for civilization. For example, Bostrom suggests that a singleton could hold Darwinian evolutionary pressures in check, preventing agents interested only in reproduction from coming to dominate.

Yet Bostrom also regards the possibility of a stable, repressive, totalitarian global regime as a serious existential risk
Existential risk
Existential risks are dangers that have the potential to destroy, or drastically restrict, human civilization. They are distinguished from other forms of risk both by their scope, affecting all of humanity, and severity; destroying or irreversibly crippling the target.Natural disasters, such as...

. The very stability of a singleton makes the installation of a bad singleton especially catastrophic, since the consequences can never be undone. Bryan Caplan
Bryan Caplan
Bryan Caplan is an American economist, a Professor of Economics at George Mason University, Research Fellow at the Mercatus Center, adjunct scholar of the Cato Institute, and blogger for Econlog. He is best known for his work in public choice theory and for his libertarian ideology.-Personal...

writes that "perhaps an eternity of totalitarianism would be worse than extinction".
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