Hanson, Robin et al. (2021) If loud aliens explain human earliness, quiet aliens are also rare, The Astrophysical Journal, vol. 922, p. 182.922.
Olson, S. Jay & Toby Ord (2021) Implications of a search for intergalactic civilizations on prior estimates of human survival and travel speed, ArXiv, vol. arXiv:2106.13348.
anthropics | doomsday argument | extraterrestrial intelligence | Fermi paradox | Great Filter
Hanson, Robin et al. (2021) If loud aliens explain human earliness, quiet aliens are also rare, The Astrophysical Journal, vol.
922, p. 182.922.