A field does not need a founder to form. The AutonomousFormation names the capacity of a corpus to generate its own structure without external direction: not independence from origin, but self-organization beyond origin. In the Socioplastics architecture, this is the most radical concept. The field was founded by a single practitioner. But its 3,000 nodes, 30 Books, and 60 DOIs now constitute a structure that exceeds any individual intention. The AutonomousFormation makes this explicit. It asks: at what point does a field become self-organizing? When do the internal rules of the corpus become more powerful than the external will of its founder? When does the field begin to generate concepts that the founder did not anticipate? The answers are empirical. A field becomes autonomous when its internal cross-references exceed its external inputs. When the corpus generates more connections internally than it receives from outside, it has achieved autonomous formation. This is not betrayal of origin. It is maturation. The founder becomes one node among many, connected by the same structural rules that govern all other nodes. Node 2503 places this concept in Core IV because autonomous formation is a field condition, not a personal achievement. It is the structural threshold at which a project becomes a field. Without this concept, the field remains identified with its founder. With it, the field achieves structural independence.