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Mere addition paradox: (Parfit's paradox) Is a large population living a barely tolerable life better than a small, happy population? Moore's paradox : "It's raining, but I don't believe that it is." Newcomb's paradox : A paradoxical game between two players, one of whom can predict the actions of the other.
This is an accepted version of this page This is the latest accepted revision, reviewed on 20 January 2025. Problem of the lack of evidence for alien life despite its apparent likelihood This article is about the absence of clear evidence of extraterrestrial life. For a type of estimation problem, see Fermi problem. Enrico Fermi (Los Alamos 1945) The Fermi paradox is the discrepancy between ...
The Great Filter is the idea that, in the development of life from the earliest stages of abiogenesis to reaching the highest levels of development on the Kardashev scale, there is a barrier to development that makes detectable extraterrestrial life exceedingly rare. [1] [2] The Great Filter is one possible resolution of the Fermi paradox.
The universe is filled with a very large number of planets, where the probability is that some present conditions hospitable for life; [3]: 336 and; Terrestrial life is observed to expand until it fills all niches suited to it. [7] These contradictory facts form the basis for the Fermi paradox. [3]
Also known as the ship of Theseus, this is a classical paradox on the first branch of metaphysics, ontology (philosophy of existence and identity). The paradox runs thus: There used to be the great ship of Theseus which was made out of, say, 100 parts. Each part has a single corresponding replacement part in the ship's port.
Topics about Paradoxes in general should be placed in relevant topic categories. Pages in this category should be moved to subcategories where applicable. This category may require frequent maintenance to avoid becoming too large.
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The trilemma points out that a technologically mature "posthuman" civilization would have enormous computing power; if even a tiny percentage of them were to run "ancestor simulations" (that is, "high-fidelity" simulations of ancestral life that would be indistinguishable from reality to the simulated ancestor), the total number of simulated ...