An Explanation for the Absence of Extraterrestrials on Earth.¶
Hart, M. H. (1975). An Explanation for the Absence of Extraterrestrials on Earth. Quarterly Journal of the Royal Astronomical Society, 16, 128-135.
Cited by¶
1 citation across 1 artifact.
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Primes¶
- Absence Of Evidence Vs Evidence Of Absence
- In astronomy and physics, a non-detection becomes an upper limit on flux, mass, or cross-section only after the instrument's sensitivity is characterized, and Fermi-paradox arguments turn on whether existing searches have been sensitive enough for silence to constrain civilization density.
This sourceCanonical formulation of the Fermi-paradox argument, turning silence into a constraint only when searches are assumed sensitive enough to have detected.
- In astronomy and physics, a non-detection becomes an upper limit on flux, mass, or cross-section only after the instrument's sensitivity is characterized, and Fermi-paradox arguments turn on whether existing searches have been sensitive enough for silence to constrain civilization density.
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