Compound Fork — Mars uncrewed × Mars uncrewed
Each cell = a joint scenario "Both branches fire". Cell intensity = total |Δ| across the 200 highest-conviction tradeable predictions vs their unconditional posterior. Joint probabilities approximated via log-odds combination (assumes conditional independence given the prediction — coarse but bounded). Click a cell to drill into the dominant single-fork view.
Pick two fork families
| Mars uncrewed ↓ × Mars uncrewed → | MARS_2026 prior 25% | MARS_2028 prior 50% | MARS_2031PLUS prior 25% |
|---|---|---|---|
MARS_2026 prior 25% | 132 claims · Σ|Δ| 19.31 | 131 claims · Σ|Δ| 19.10 | 131 claims · Σ|Δ| 19.10 |
MARS_2028 prior 50% | 131 claims · Σ|Δ| 19.10 | 132 claims · Σ|Δ| 19.18 | 132 claims · Σ|Δ| 19.18 |
MARS_2031PLUS prior 25% | 131 claims · Σ|Δ| 19.10 | 132 claims · Σ|Δ| 19.18 | 132 claims · Σ|Δ| 19.18 |
Method note
Joint conditional probability is approximated via log-odds combination: logit(P(pred|A,B)) ≈ logit(P(pred|A)) + logit(P(pred|B)) − logit(P(pred)). This is the closed-form Bayesian update assuming A and B are conditionally independent given the prediction. It's correct when the two scenarios act on the prediction through different causal paths; it's pessimistic when they overlap. The exact joint requires running the Gibbs sampler with both scenarios clamped, which would be N×M=16 sampling runs (~12 minutes per refresh) instead of N+M=8 — a 2× cost for higher fidelity.