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How to improve randomized trials

Identifying how experimental units interact, and testing how these relationships affect outcomes, can make experiments more informative and valuable.

Can a longer memory improve predictions?

Harold Hurst had a problem: reality refused to conform to a model. That’s no small concern when your job is to predict the flow of the Nile River, which runs through 11 countries.

The biggest blunders in sports

 Using the best tactics from both worlds—the subjective and the objective, the emotional and the rational—teams will reach heights of achievement and competition that neither the old guard nor the new could reach on their own.

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