Fine-tuned universe
Hypothesis about life in the universe / From Wikipedia, the free encyclopedia
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The characterization of the universe as finely tuned intends to explain why the known constants of nature, such as the electron charge, the gravitational constant, and the like, have their measured values rather than some other arbitrary values. According to the "fine-tuned universe" hypothesis, if these constants' values were too different from what they are, "life as we know it" could not exist.[1][2][3][4] In practice, this hypothesis is formulated in terms of dimensionless physical constants.[5]