Heinz von Foerster

Heinz von Foerster was an Austrian-American physicist and cyberneticist who served as secretary of the Macy Conferences and directed the Biological Computer Laboratory at the University of Illinois.

He is celebrated as the founder of “second-order cybernetics”—the cybernetics of observing systems—which turned the field’s attention from the systems being observed to the observer who does the observing. His aphorisms (“objectivity is the delusion that observations could be made without an observer”; “if you desire to see, learn how to act”) crystallized a constructivist epistemology in which knowledge is constructed by the knower rather than copied from a ready-made world.

Von Foerster is a foundational node in the cybernetic stream this Atlas follows into modern consciousness culture. By insisting that every observation includes the observer, he supplied the rigorous, scientifically respectable root of radical constructivism—the view that reality as known is built by the observing system.

This idea flows directly through his collaborators Maturana and Varela into the now-mainstream “the brain constructs reality” framing, and, in looser hands, into the New Age and reality-shifting claim that consciousness creates its world.

Von Foerster was a serious systems scientist; the metaphysical inflation of his observer-dependence into “mind makes matter” goes beyond his actual epistemological position.