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SETI’s Hard Steps (and How to Resolve Them)

Summary by Centauri-dreams.org
The idea of life achieving a series of plateaus, each of which is a long and perilous slog, has serious implications for SETI. It was Brandon Carter, now at the Laboratoire Univers et Théories in Meudon, France, who proposed the notion of such ‘hard steps’ back in the early 1980s. Follow-up work by a number of authors, especially Frank Tipler and John Barrow (The Anthropic Cosmological Principle) has refined the concept and added to the steps Car
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centauri-dreams.org broke the news in on Friday, February 21, 2025.
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