Are “Betting Systems” Legit — Or Just Data Mining?

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  • March 1, 2026 at 10:28 pm #51833

    Every bettor encounters “systems.”

    But what separates:

    ✔ Robust model
    from
    ✖ Overfit backtest?

    Discussion:

    • Sample size thresholds
    • Cross-season validation
    • Out-of-sample testing
    • Survivorship bias

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