## Problem 132 — rank:85

**Title:** Developmental timing across species

**Added binding assumptions (LaTeX):**

```latex
Fix the finite complexity and monotonicity of the species time-warp family before fitting, and reserve events and species for validation. A common latent developmental clock additionally requires compatible event ordering and composition consistency, $T_{ac}=T_{bc}\circ T_{ab}$, on the declared overlap. Measurement error in both species' event times is modeled. A fitted pairwise time warp alone does not establish a universal clock.
```

**Direct edits:** 0. **Fresh external checks:** SC08