Text stimulus (diagram): Left-to-right flowchart titled "Facility Planning Process." Boxes in order: 1 Agency defines problem; 2 Consultants develop one preferred plan; 3 Draft plan published; 4 Public hearing; 5 Final vote. Connections: boxes with one-way arrows. Additional evidence: a single resident-input icon pointing only to Box 4. Shown: no arrow returning from Box 4 to Boxes 1, 2, or 3 and no response-matrix box. What is the main procedural weakness?