# VWDC-03 — Visual World Branching, Lineage, and Evidence Transport

## Core warning

$$
\boxed{
\text{different world IDs}
\not\Rightarrow
\text{independent evidence}.
}
$$

## Effective branch count

$$
\boxed{
n_{\mathrm{eff}}
=
\frac{
n
}{
1+(n-1)\rho
}.
}
$$

## Paired counterfactual contrast

$$
\boxed{
\operatorname{Var}(Y_1-Y_0)
=
2\sigma^2(1-\rho).
}
$$

## Invalidation

Invalidating a required dependency invalidates its descendant closure.

## Reality transport

$$
\boxed{
d_R(
T(\widehat q_W),
q_R
)
\le
L_T\varepsilon_W
+
\delta_{\mathrm{trans}}.
}
$$

## Canonical principle

Branch count is computation. Evidence independence is structure.

## Package contents

- canonical paper;
- literature audit;
- roadmap;
- VWDC-04 handoff;
- theorem index;
- tests;
- validation;
- checksums.