For the experiment, participants competed in two nine-month-long forecasting tournaments. The questions for the tournament were selected by the Intelligence Advanced Research Projects Activity. Over the two years of the tournament, the forecasters were each asked a total of 199 questions, which “covered topics ranging from whether North Korea would test a nuclear device between January 9, 2012, and April 1, 2012, to whether Moody’s would downgrade the sovereign debt rating of Greece between October 3, 2011, and November 30, 2011.” Forecasters had to answer at least 25 of the questions. The vast majority of the questions had just two possible outcomes, like if a certain embattled world leader would remain in power after a given date. Other questions asked forecasters to choose one time-frame among multiple choices for a possible future event. Participants answered the questions online.