Quote:
Originally Posted by Textcritic
How many events take place where intelligence actually emerges over time? Maybe 12.5 billion years is just as long as it takes.
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This.
The events that have to happen (or not happen) are often overlooked. People often view evolution as a constant upward towards more complex or intelligent life, but it takes some pretty specific evolutionary pushes to evolve intelligent life capable of shaping their own environment. Out of the roughly 5 billion species that have existed on Earth, only one has evolved in that way. That is a pretty significant sample size.