Backtest Lab is a model inspection surface, not the public tracked-results ledger. It is most useful for comparing parameter sets against the same stored fight, result and odds pool.
All model leans treat every usable directional lean as a one-unit strategy bet. Value/advantage modes add a market-difference requirement before a lean becomes a simulated bet.
All three modes protect deterministic history. Win/finish/activity/trend records are reconstructed only from bouts before the sampled fight, with the sampled fight explicitly excluded. Weight-class movement uses verified pre-bout division evidence and becomes neutral when that evidence is unavailable. Height/reach is treated as a stable physical-profile dimension. A broader mode never grants permission to feed the target result or a later objective record backward into a prediction.
Time Safe: On (strict) is the cleanest audit mode. Bout coverage is limited to the strict public-result pool: settled fights that FiteQuant tracked or recovered with enough pre-fight prediction, result and odds evidence to treat them as public ledger candidates. Strict mode uses pre-fight snapshots and disables opponent-rating-derived fields because their upstream rating provenance cannot always meet the strict boundary. Current SSI-derived style or stance data is never substituted for missing historical context.
Time Safe: On (non-strict) uses the strict pool plus explicitly verified non-strict rows. These are settled canonical bouts with closing odds and timestamped pipeline evidence, but without full public tracked-result status. It preserves the same deterministic objective and weight-class protections as strict mode, while allowing the documented opponent-rating-derived exceptions for targeted lab models. Current SSI-derived style or stance data is still not substituted for missing historical context.
Time Safe: Off uses the broad stored canonical fight, result and odds pool inside the selected window. It exists primarily to explore current SSI-derived subjective and style profiles across fights that pre-date FiteQuant tracking. Those SSI-derived inputs are not claimed to be historical snapshots, and opponent-rating-derived fields may include non-strict upstream values. Deterministic objective history and verified weight-class handling remain protected. Off means broader SSI provenance and coverage; it does not mean target-result leakage is allowed.
For serious model comparison, change one lens at a time: strategy, market bucket, confidence tier, time-safety mode, or objective history window. The useful signal is usually the pattern across runs, not one isolated ROI cell.