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High-energy astrophysical events that cause galaxy-scale extinctions havebeen proposed as a way to explain or mollify the Fermi Paradox, by making theuniverse at earlier times more dangerous for evolving life, and reducing itspresent-day prevalence. Here, we present an anthropic argument that a moredangerous early universe can have the opposite effect, actually increasingestimates for the amount of visible extragalactic life at the present cosmictime. This occurs when civilizations are assumed to expand and displacepossible origination sites for the evolution of life, and estimates are made byassuming that humanity has appeared at a typical time. The effect is not seenif advanced life is assumed to always remain stationary, with no displacementof habitable worlds.

Life-hostile conditions in the early universe can increase the present-day odds of observing extragalactic life