closure does not mean that the system is materially and energetically closed to the outside world… Organizational closure refers to the self-referential (circular and recursive) network of relations that defines the system as a unity
This passage establishes the technical distinction between organizational and operational closure in Varela’s autonomy theory, defining closure as self-referential structural unity rather than material isolation.
, Mind in Life: Biology, Phenomenology, and the Sciences of Mind, 2007thesis