(biology) A hypothesis attempting to explain why most hosts of brood parasites care for the parasite's nestlings. Since the host's nest is attacked if the parasite's egg is detected and rejected, this indirectly enhances selective pressures favouring aggressive parasite behaviour that may result in positive feedback between mafia-like parasites and compliant hosts.

Synonym of conspiracy theory

a hypothesis that is unverified yet tentatively chosen as a best guess to build upon or put effort into its verification

The idea that both the biosphere and the inorganic components of Earth interact to form a coherent, complex system that allows for life to persist.

(Christianity) The hypothesis that Jesus did not die on the cross, but merely lost consciousness, and thus his resurrection in the tomb was not miraculous.

(mathematics, mathematical analysis, number theory) The conjecture that the zeros of the Riemann zeta function exist only at the negative even integers and certain complex numbers whose real part is ½.

(theology) The hypothesis that the Pentateuch consists of two or more, usually four, originally distinct major documents.

(economics) The proposition that a long-term interest rate is determined purely by current and future expected short-term rates, so that the expected final value of wealth from investing in a sequence of short-term bonds equals the final value of wealth from investing in long-term bonds.

(set theory) The hypothesis that, for each ordinal 𝛼, there is no cardinal number strictly between א_𝛼 and 2^(א_𝛼), i.e. 2^(א_𝛼)=א_(𝛼+1).

An evolutionary hypothesis which proposes that organisms must constantly adapt, evolve, and proliferate not merely to gain reproductive advantage, but also simply to survive while pitted against other evolving organisms in an ever-changing environment.