Commensurate control locates the real danger in a relationship, not a level. A highly capable system is not, by itself, the problem; the problem is capability growing faster than the ability to understand it, constrain it, verify its behavior, and recover from its failures. When that relationship holds, capability and safety rise together; when it breaks, the ecology is building power it cannot govern, and ecological capacity has become self-undermining — growth that erodes the field’s ability to stay in control of its own growth.
Stated as a transition rule: capability growth must remain commensurate with control capacity. It is the loss-of-control form of the framework’s wider pacing logic — the same insistence that a system’s rate of change stay matched to the ecology’s ability to absorb it, applied where the failure mode is not disruption but irreversibility. Its operational companion is demonstrated recovery capability: the concrete measure of whether control has kept pace.