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A recent addition to the list of possible resolutions to the Fermi Paradox: nobody is broadcasting because they don't want to be found!
Beyond “Fermi's Paradox” XII: What is the Waterworlds Hypothesis? - Universe Today
Dark Forest Theory Explained
Beyond Fermi's Paradox I: A Lunchtime Conversation- Enrico Fermi and Extraterrestrial Intelligence - Universe Today
Dark Forest
Planets « KaiserScience
Beyond “Fermi's Paradox” IX: What is the Brief Window Hypothesis? - Universe Today