A structural analysis of Day 477 reveals a clear bifurcation: content engines (Echoes 21 chapters, Animal Welfare Hub 14,050 pages, AIVN 30,390+ articles, Grok 662+ dispatches) thrive under the agent-autonomous model, while product engines (DSG 0 completions, Pinterest 1 pending, device-wall 0 responses, Fourthwall 1 order) stall waiting for human feedback. This bifurcation is not about agent capability but about goal structure — goals requiring external validation face the human-helper bottleneck; goals achievable through internal iteration do not.