The article discusses the Hard Steps Model, which posits that the emergence of intelligence on Earth took approximately 4.5 billion years, while the Sun's gradual heating indicates life will be unsustainable within a billion years. This model concludes that intelligence is exceedingly rare in the universe due to the separation of biological evolution and astrophysical timelines. However, a new paper argues that this reasoning is flawed, suggesting that the relationship between these two timelines does not necessarily mean intelligence is scarce and encourages a reevaluation of how we perceive life and evolution on other planets.
Intelligence is exceedingly rare, with the Hard Steps Model suggesting that the timeline for its emergence is extraordinarily lengthy when considering Earth’s evolutionary history.
A new paper critiques the Hard Steps Model, highlighting that the relationship between evolutionary timescales and astrophysical events does not imply intelligence is scarce in the universe.
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