GUIDED LIGHT LAB · SYNTHETIC VALUES
Keep price, return, and tax views separate
Choose a scenario, then use Step to move one causal stage at a time. The canonical preview is already visible; interaction explains where each number comes from and where the calculation must stop.
Theoretical ex-price
Backward factor
Observed gross return
Observed net cash return
Basis after
Excess over basis
Audit trace
| Stage | Evidence or formula | Decision | Lineage |
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