Bridge Builder

What it does

When the gap detector fires, the bridge builder constructs a bridge — a plausible path from the input to the closest shape. Every bridge comes with explicit assumptions. The bridge is not a guess; it is a structured extrapolation with documented conditions.

Bridge output

{
  "bridge": "Assuming feedback loops scale linearly and no external perturbation occurs, the system's behavior maps to pentagon_recursive with recursive self-reinforcement.",
  "assumptions": [
    "Feedback loops scale linearly",
    "No external perturbation",
    "Self-reinforcement is the dominant mechanism"
  ],
  "confidence": 0.65
}

Assumptions

Every bridge includes a list of assumptions. These are the conditions under which the bridge holds. If any assumption is later contradicted by a new input in the chain, the conflict detector will flag it.

This is the critical difference between Doorway and other reasoning systems: assumptions are never hidden. They are first-class outputs.

Bridge confidence

Bridge confidence is separate from geometric confidence. Geometric confidence measures shape matching quality. Bridge confidence measures how viable the extrapolation is. A bridge with 0.9 confidence is strong but still conditional on its assumptions.