The official Twitter handle of the internet's smartest crowd. GJ Open forecasts do not represent the views of Good Judgment Inc (our doting parent co.)
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Are you a Superforecaster®? Our 11th annual collaboration with The Economist is live. In The World Ahead 2026 challenge on GJ Open (gjopen.com/challenges/130-th…), you can test your skill on political, economic, and cultural questions. The winner will be published in The Economist!
Here are some predictions for the coming year, from the experts at Good Judgment economist.com/the-world-ahea…
Elon Musk says Starship Flight 15 will try to catch the ship with the tower, which would be a first. Will SpaceX make a successful catch before 2027?
Plus, Focker-in-Law opens 25 November. How much will it gross domestically over the Thanksgiving weekend?
gjopen.com/questions/5823-wi…
Happy Friday, forecasters! From the SCOTUSblog Challenge: The Supreme Court hears DHS v. D.V.D. in December. Will it find DHS’s third-country removal policies unconstitutional or unlawful? (AI models are forecasting this too. We’ll share their results when the challenge ends!)
Also open: Iran’s crude output in Q1 2027 and Argentina’s annual inflation in September 2027.
gjopen.com/challenges/146-sc…
gjopen.com
Good Judgment Open retweeted
“Learning to forecast requires trying to forecast. Reading books on forecasting is no substitute for the experience of the real thing.” - Phil Tetlock & Dan Gardner in Superforecasting
Next workshop: goodjudgment.com/services/up…
How high will NVIDIA’s market cap climb? Will Taiwan and China have a lethal confrontation before October 2027? Could US courts restrict Polymarket and Kalshi’s sports contracts in New York?
Test your forecasting skill with new questions on #GJOpen.
Who will win the 2026 Booker Prize? How much will The Hunger Games: Sunrise on the Reaping earn on its opening weekend?
New questions to forecast on #GJOpen. Have your say!
Good Judgment Open retweeted
I'm looking forward to my presentation at Predict 2026 on "Superforecasting Prediction Markets." If you're there and want to meet up, just give a shout! predict-conference.com/
It’s New Question Friday on #GJOpen! Forecast Swiss reservoir levels, whether Emmanuel Macron will endorse a candidate for France’s 2027 presidential election, AfD’s finish in North Rhine-Westphalia, and the US supply of new houses.
Will Emmanuel Macron publicly endorse a specific candidate for the 2027 French presidential election? gjopen.com/questions/5799-wi…
All questions: gjopen.com/questions
We’ve launched the SCOTUSblog 2026–27 Supreme Court Forecasting Challenge on #GJOpen. The first questions cover federal preemption, excessive fines, gun restrictions, and jury size. Put your judgment to the test, and see it stacks up against AI!
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More about the challenge: gjopen.com/challenges/146-sc…
We’ve partnered with @SCOTUSblog on a Supreme Court forecasting challenge for the 2026-27 term. Forecast the term’s biggest cases on GJ Open. On 15 of them, we’ll compare the crowd with AI models. The top three will win a prize. Join for free: gjopen.com/challenges/146-sc…
In collaboration with Good Judgment Inc, we’re now giving readers a way to formally prognosticate how the court will decide the most important cases of the term.
scotusblog.com/2026/09/annou…
xAI’s US business adoption rate rose to 4% in July, its fastest growth since July 2025, according to the Ramp AI Index. It is currently at 4.6%, behind Google at 6.2%. When will xAI next pass Google? Now live on #GJOpen.
Find this and other new forecasting questions here: gjopen.com
The AfD took 39 of 83 seats in Saxony-Anhalt, three short of a majority, and no other party has agreed to govern with it. Will the state’s next minister-president be an AfD member of the Landtag? Forecast it on #GJOpen!
Find this and other new questions here: gjopen.com
The Bank of Japan and Fed rates in January, plus new questions from Harvard and the 2026 CMA Awards. Forecast on #GJOpen: gjopen.com
Happy Friday, forecasters! Test your forecasting skills with new questions from the Harvard Kennedy School Challenge and our Red Carpet Challenge, covering everything from the price of gas to the CMA Awards. #GJOpen
Harvard Kennedy School:
gjopen.com/challenges/145-th…
Red Carpet:
gjopen.com/challenges/141-20…