[1][8] On October 16, 17, and 18, 2017, it sent a message consisting of a scientific and mathematical tutorial to the red dwarf Luyten's Star, just over 12 light years from Earth.
[12] METI's aim is to build an interdisciplinary community to design interstellar messages, within the context of the evolution of intelligence and language.
[16][17] American scientist and science-fiction author David Brin has questioned "whether small groups of zealots should bypass all institutions, peer critique, risk appraisal or public opinion, to shout ‘yoohoo’ into a potentially hazardous cosmos" and so force a fait accompli on humanity.
[18] Numerous other authors and scientists have expressed similar concerns, generally known as the Dark forest hypothesis of ETI, including Stephen Hawking.
[19][20] Of particular interest in science fiction is Cixin Liu's Remembrance of Earth's Past, exploring the theory and some of its implications.