Mathematics – Logic
Scientific paper
Oct 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982newsc..96...33t&link_type=abstract
New Scientist, vol. 96, Oct. 7, 1982, p. 33-35.
Mathematics
Logic
1
Extraterrestrial Intelligence, Milky Way Galaxy, Project Seti, Biological Evolution, Interstellar Travel, Space Colonies, Space Probes
Scientific paper
An assessment is presented of the probability of the existence of intelligent extraterrestrial life in view of biological evolutionary constraints, in order to furnish some perspective for the hopes and claims of search of extraterrestrial intelligence (SETI) enthusiasts. Attention is given to a hypothetical extraterrestrial civilization's exploration/colonization of interstellar space by means of von Neumann machine-like, endlessly self-replicating space probes which would eventually reach the planetary systems of all stars in the Galaxy. These probes would be able to replicate the biology of their creator species, upon reaching a hospitable planet. It is suggested that the fundamental technological feasibility of such schemes, and their geometrically progressive comprehension of the Galaxy, would make actual colonization of the earth by extraterrestrials so probable as to destroy the hopes of SETI backers for occasional contact.
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