Batch cycle-001. Model 0.1.0, graph 0.2.0, parameters 0.1.0. 100 simulations, seeds 1 to 100; probes on 20. Every figure is a distribution over simulations of a structural model with seed parameter values; it shows what the model implies under these settings, not what will happen. Other nations are frozen at their 2026 ratings. No reconstructed historical data is used in this experiment.
Headline
Brazil played 20 rounds from 2026 under the hold method, with stochastic events, 100 times. Its capability index moved from 11.69 to a median of 11.24 (−0.45), with 90 per cent of simulations between 10.19 and 11.84 [experiment_objectives].
Starting position
In 2026 the nation ranks 30 on the index against the frozen field, holds 0 of nine domains at Tier 1 and has a tier rank of 33. Its base income is 386 credits a year, calibrated so that its 2026 position is affordable with headroom for investment.
What was decided
No actions were taken: the method holds, so income pays maintenance and the rest is carried over.
What the world did
A median simulation saw 2 shocks and 1 upside events. The most damaging per firing were S09 (9 firings in 9 simulations, −33.7 points each); S10 (3 firings in 3 simulations, −31.2 points each); S08 (33 firings in 29 simulations, −29.8 points each) [experiment_shocks]. Upside events fired 90 times across all simulations [experiment_shocks].
The groups that lost most to shocks, per simulation: Fiscal Capacity & Public Finance −1.12; Information Environment & Strategic Communication −0.99; Digital & Services Trade −0.95; Trade Facilitation & Logistics −0.92 [experiment_shock_damage_by_group].
The edges that carried most change through the graph, per simulation: Fiscal Capacity & Public Finance to Social Infrastructure (−0.17 points); Fiscal Capacity & Public Finance to Force Generation & Mobilisation (−0.13 points); Fiscal Capacity & Public Finance to Transport Infrastructure (−0.11 points) [experiment_propagation_by_edge].
Where it ended
At 2046 the median rank is 34 (5th to 95th percentile 30 to 44), the median count of Tier 1 domains 0 (0 to 0) and the median tier rank 34; the resilient score, the mean score sum over simulations, is 807 [experiment_objectives].
Why
Without shocks the index ends +0.844 higher on average, so the shocks cost about 0.844 index points [experiment_probe_attribution].
Holding instead of following this method changes the index by 0.000: that is the method's worth against doing nothing [experiment_probe_attribution].
Removing the largest shock of a simulation raises the index by +0.453 on average [experiment_probe_attribution].
The replay probe reproduces the simulations exactly (index change 0.000000), so the attributions are clean [experiment_probe_attribution].
Surprises
The simulation furthest from the median (seed 33) ends −1.84 from it, with 7 shocks and 0 upside events [experiment_outlier_simulations].
Comparison
This is the baseline (hold) experiment, or there is none for this nation in the batch.
No backcast comparison: this experiment does not start from a historical position [experiment_against_history].