## Problem 136 — rank:145

**Title:** Developmental plasticity

**Added binding assumptions (LaTeX):**

```latex
Restrict the reachable set to feasible exposure policies satisfying a prespecified survival and safety probability, rather than including arbitrary lethal histories. Contrasts between early exposures use interventions and a common controlled later history, not conditioning on selected survivors. Persistence to a finite time is an operational memory criterion; it is not mathematical irreversibility for all future admissible interventions.
```

**Direct edits:** 0. **Fresh external checks:** None; supplied sources retained as provenance.