Test the neighborhood,
not only the line.

Pre-register a machine-readable rejection rule, compute one baseline, then challenge it with atomic and joint stresses.

01 / Define

One claim. One rejection rule.

Demonstration

Data mode

A transparent deterministic sample for learning the workflow—not empirical market evidence.

Falsifiable claim

Machine rejection rule

MetricMust beThreshold

Reject the claim unless net total return > 0% for every required perturbation.

StrategyUniverseStartEndFee rateSlip / share

Atomic

Fee ×5 · slippage ×5 · window +30d · narrow universe

Joint

Fee ×5 + slippage ×5 + window +30d

Ready / define the rejection rule

02 / Perturb

ε / Execution cost

ε / Slippage

ε / Test window

ε / Universe

ε / Joint stress