Extras

    Video thumbnail: NOVA Prediction by the Numbers Prologue

    NOVA

    Prediction by the Numbers Prologue

    Discover why some predictions succeed and others fail as experts forecast the future.

    Prediction by the Numbers Prologue

    Video thumbnail: NOVA The Wisdom of the Crowds

    NOVA

    The Wisdom of the Crowds

    Crowds hold a predictive power that can have startling accuracy.

    The Wisdom of the Crowds

    Video thumbnail: NOVA What is a P-Value?

    NOVA

    What is a P-Value?

    Science's most important number has its origins in a British experiment involving tea.

    What is a P-Value?