Hard Steps Model

Concept

A model used to estimate the number of critical evolutionary events required for intelligent life to emerge, influencing the calculation of a civilization's birth rank.

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What If Humanity Is Among The First Spacefaring Civilizations?

What If Humanity Is Among The First Spacefaring Civilizations?

PBS Space Time

A model used to estimate the number of critical evolutionary events required for intelligent life to emerge, influencing the calculation of a civilization's birth rank.