Mini thesis
The model is the expression layer, not the whole agentic system.
Agentic AI is often discussed as if the model, the interface, and the agent were the same thing. That confusion makes systems harder to govern, harder to trust, and harder to correct.
A model can speak fluently. It can summarize, reason over context, draft, search, and explain. But in serious work, fluent expression cannot be treated as the same thing as judgment. The working system around the model must decide what role is active, what evidence matters, what boundary applies, and whether any answer should be given at all.
Signalane uses a simple public distinction: the model is the mouth, not the mind. The model gives language to the work. It should not silently become the authority that defines the work.
This matters because agentic systems will increasingly coordinate across tools, files, sessions, and other agents. If the decision layer is not readable, the system may look capable while no one can tell where judgment actually lives.