ENH: continue a Monte Carlo study from the root its rows were drawn with

CHANGELOG.md

@@ -32,6 +32,8 @@ Attention: The newest changes should be on top -->
 
 ### Added
 
+- ENH: Continue a Monte Carlo study from the root its rows were drawn with [#1187](https://github.com/RocketPy-Team/RocketPy/pull/1187) [#1075](https://github.com/RocketPy-Team/RocketPy/issues/1075)
+- ENH: Reproducible Monte Carlo through per-simulation-index seeding [#1054](https://github.com/RocketPy-Team/RocketPy/pull/1054) [#1053](https://github.com/RocketPy-Team/RocketPy/issues/1053)
 - ENH: Support fixed-time parachute deployment triggers [#1133](https://github.com/RocketPy-Team/RocketPy/pull/1133) [#437](https://github.com/RocketPy-Team/RocketPy/issues/437)
 - DOC: Add SIL parachute ejection integration example [#1131](https://github.com/RocketPy-Team/RocketPy/pull/1131) [#524](https://github.com/RocketPy-Team/RocketPy/issues/524)
 - ENH: List NOAA atmosphere datasets and fetch latest [#1136](https://github.com/RocketPy-Team/RocketPy/pull/1136) [#660](https://github.com/RocketPy-Team/RocketPy/issues/660)

docs/user/stochastic.rst

@@ -289,3 +289,16 @@ better reflecting the inherent uncertainties in rocketry.
 .. note::
     See the ``MonteCarlo`` class documentation for more information on how to run \
     Monte Carlo simulations with stochastic objects.
+
+.. note::
+    A whole run is fixed by ``MonteCarlo.simulate(random_seed=...)`` rather than
+    by seeding these models yourself. Each simulation takes its seed from its
+    own index, so simulation 7 draws the same inputs whether the run was serial
+    or split over any number of workers. Every input row records the root it
+    came from, so appending carries that study on whether or not the seed is
+    given again, and a different one is refused rather than mixed in. Without
+    a seed a run draws fresh entropy and reproduces nothing.
+
+    What an index fixes is the inputs it draws. A stochastic input reads its
+    nominal from the object it wraps, and a run moves that as it goes, so the
+    flight itself can still differ by which worker took the index.