anthropic

The Greek noun anthropos denoted a human being as distinct from gods or animals, and appears in Plato, Aristotle, and Homer. Its precise origin is debated: some etymologists trace it to aner, man, combined with ops, face, suggesting the one with a human face, while others treat it as pre-Hellenic, entering Greek without a recoverable Indo-European ancestor. The word was unusually generative, producing philanthropia, love of humanity; misanthropia, hatred of humanity; and anthropologia, the study of humans.

English borrowed the combining form anthrop- via Latin in the 17th century, producing anthropology, first attested in English around 1593, and anthropomorphism, attested by 1753. The standalone adjective anthropic remained rare in English until 1973, when the British-Australian cosmologist Brandon Carter used it at a Kraków symposium marking the 500th anniversary of Copernicus's birth. Carter's Anthropic Principle stated that the universe's physical constants must be compatible with the existence of observers, because if they were not, no observers would exist to measure anything.

Carter distinguished a weak form of the principle, that we only observe universes hospitable to life, from a strong form, that the universe must at some point permit conscious existence. The distinction drew fierce debate among physicists and philosophers across the 1980s and 1990s: some read it as a legitimate selection-effect argument, others as circular reasoning in Greek costume. By 2000, the word anthropic had appeared in the titles of more than a thousand academic papers.

In 2021, Dario Amodei, Daniela Amodei, and colleagues who had left OpenAI founded an AI safety company and named it Anthropic. They chose the word for its root meaning of human-centered and for its echo of the Anthropic Principle's question: what conditions does existence require? The company name drew anthropic from physics seminars into financial reporting, giving a 19th-century adjective a second career in one of the most scrutinized sectors of the early 21st century. The word had spent 48 years in cosmology before technology claimed it.