What problem does it solve? Modeled numbers travel fast while their assumptions travel slow, and an output whose inputs and parameters cannot be traced back is indistinguishable from invention. This Skill runs scenarios through a local simulation capability and keeps the chain from inputs to parameters to outputs unbroken and inspectable. ## Core Features & Use Cases - Traceable scenario runs: Every output traces to exact inputs, the full parameter set with defaults flagged, seeds recorded, and the run date. - Two-scenario comparison: Run two scenarios side by side with each chain kept strictly separate, then deliver a comparison that cites each side independently. - Validation before conclusions: Runs that fail validation (missing logs, defaulted key parameters, unrecorded seeds) are reported as findings, never smoothed over. - Use Case: Before quoting a projected outcome in a decision memo, run the scenario with the full parameter set logged, then report the conclusion with inline references to the raw log plus a labeled list of gaps and unknowns. ## Quick Start Run this scenario through the simulation with all parameters logged and tell me what came out, flagging any defaulted parameters or gaps.