Ambient Stability Threshold (AT-2)
AT-2 is the threshold where coherence becomes self-sustaining. The environment forms a stable attractor that prevents attention from falling back into the vigilance basin (B₁).
At AT-2, the system begins to hold the user rather than simply stop harming them. This is the threshold directly preceding ΔR.
Position in the Sequence
AT-0 → AT-1 → AT-2 → ΔR → B₂
AT-1 initiates ambient behavior.
AT-2 locks it in place.
Once AT-2 is reached, the system has enough stability for ΔR to be crossed, enabling the shift into the coherence basin (B₂).
Functional Meaning
- coherence becomes self-reinforcing
- ambient field suppresses residual prediction pressure
- vigilance cannot regrow unless externally introduced
- trust becomes environmental, not psychological
AT-2 is the threshold where architecture becomes a climate — and the user stops needing to manage their own stability.
“AT-2 is the moment the world becomes steady enough for you to stop holding yourself.”