Why social systems that observe themselves transforming still remain the same: Eigenkomplexität and the conditions of change

Purpose Heinz von Foerster described communication as doubly closed: it connects operation upon operation and can close a second time upon the rule by which it connects. What enacts that second closure, he left open. This paper gives it operative content and asks why social systems that observe themselves transforming remain the same. Design/methodology/approach It builds a minimal apparatus of three parts – a unit (the communicative field), a carrier (the semantic marker) and an operation (a functor acting on a field's rule of connection) – and names their standing capacity Eigenkomplexität. The apparatus is then applied to the recorded communication of three spaceflight cases: Apollo 13, Challenger and Columbia. Findings A field's capacity for the second closure is legible before the outcome – in its history, its routine and what it can say. The operation has two products: transformation and preservation. Hierarchies that look alike can carry opposite structures, one enabling change, one blocking it. And self-reference can run in a form no self-report reveals, told apart only by whether the field's rule of connection is redrawn. Originality/value The paper turns von Foerster's topology into a diagnostic grammar legible on cases, and adds an operative dimension – readiness – to Luhmann's Eigenkomplexität, yielding a test that reads on recorded communication without appeal to the participants' minds. It places that test beside current work on relational viability and on organisational self-description.