A GJ Open Forecasting Challenge

Range by David Epstein explores why generalists triumph in a specialized world. Through his research, Epstein discovered that in most fields—especially those that are complex and unpredictable—generalists, not specialists, are primed to excel.


Applying the concepts from this best-selling book, the Range Challenge tests your forecasting mettle with questions on a broad range of topics—from world politics, business, and technology to sports, entertainment, and anything else trending in the media. The forecasting challenge will conclude on 1 January 2023, with special badges awarded to the best performing forecasters.


Join the Range Challenge on Good Judgment Open and start forecasting!

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About the Book

About David Epstein

Join the Range forecasting challenge



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