The Fermi Paradox Just Got Worse

TL;DR

A new paper calculates that technological civilizations last only ~5,000 years on average, based on our failure to detect any alien signals.

Key Points

• 1.A new paper estimates civilizations last only ~5,000 years. By plugging current best estimates for habitable planets (~1 million in the Milky Way) and near-certain probability of life into the Drake equation, then back-calculating from cosmic silence, the authors conclude technological civilizations broadcast signals for just a few thousand years.
• 2.Three explanations are proposed for why civilizations go dark so quickly. Self-inflicted extinction via war, pandemics, or environmental collapse; unknown external risks like supernovae or micro black holes; or civilizations simply losing interest in space, retreating into virtual reality or post-scarcity lifestyles.
• 3.The 'Great Filter' may be the coordination problem, not the origin of life. The host argues complex chemical cycles making life seem common, but the real bottleneck is whether a species becomes intelligent enough to coordinate collective action — a bar she doubts humans can clear without AI assistance.
• 4.The host gives the paper 5/10, arguing it misses the most obvious explanation. If faster-than-light communication is possible, advanced civilizations would use it, meaning Earth could be sitting inside a cosmic broadband stream it lacks the technology to detect — making the silence about our receivers, not alien absence.