It was previously asked whether a question of unknown nature would resolve positive. The Metaculus prediction ended up being 29.9% despite only 26.4% of previous binary Metaculus questions resolving positive. Once the nature of the question was revealed, it became clear that (despite resolving negative) the question was a lot more likely to resolve positive than the average Metaculus question. (A fair a priori probably would have been larger than 50%.)
As of the writing of this question, 525 binary Metaculus questions have resolved, the majority negative. This question is going to probe what the fair a priori of a future question will be. This avoids the arbitrariness of who gets to choose the secret question, as that still remains uncertain.
It is asked: Will the 1000th binary Metaculus question resolution be positive?
To avoid an incentive for cheating, whoever was the author of the 1000th question should be unable to earn any points on this question. The question should also be closed prematurely as soon as the 950th question resolves, even if that should be before its set closing date. Should the 1000th question resolve ambiguous, the 1001st question will be used for resolution, if the 1001st also resolves ambiguous, then the 1002nd, etc.