Manifold MarketsNo KYCVerified resolution dataFairly calibratedCurrent community forecast
No 64.1%
Forecasters
80
Question type
binary
Methodology
Play-money forecasting platform
Source type
Forecast
Market data
Updated 5 hours ago
StaleJun 28, 23, 2:39 AM UTCOct 28, 30, 11:33 AM UTC
Trends
Related Markets
Related questions for context, not a comparison of equivalent contracts.
Is the answer to the Sleeping Beauty Problem 1/2?
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KalshiRules
https://en.m.wikipedia.org/wiki/Sleeping_Beauty_problem
- The Sleeping Beauty problem is a puzzle in decision theory in which whenever an ideally rational epistemic agent is awoken from sleep, they have no memory of whether they have been awoken before.
- Upon being told that they have been woken once or twice according to the toss of a coin, once if heads and twice if tails, they are asked their degree of belief for the coin having come up heads.
- Resolves based on the consensus position of academic philosophers once a supermajority consensus is established.
- Close date extends until a consensus is reached.
- Self-locating belief and the Sleeping Beauty problem, Adam Elga (2000) - https://www.princeton.edu/~adame/papers/sleeping/sleeping.pdf
Open markets
ScienceKALSHIWhen will the next Millennium Prize be awarded?
- Before 2035+19.9pt95%
- Before 2030+6.0pt82%
- Before 2029+5.3pt55%
+2 more outcomes
- Total Vol
- $263.3K
- 24h Vol
- $145.6K
POLYMARKETWill the US confirm that aliens exist by which date?
- December 31+0.1pt4%
- September 301%
- April 300%
+3 more outcomes
- Total Vol
KALSHIWill the U.S. confirm that aliens exist?
- Before Jan 20, 2029+1.0pt21%
- Before 202813%
- Before 20275%
+5 more outcomes
- Total Vol
- $33.3M
- 24h Vol
- $31.5K
KALSHIWhen will the Riemann hypothesis be solved?
- Before 2035+11.0pt56%
- Before 203248%
- Before 2030+17.0pt44%
+1 more outcomes
- Total Vol
- $126.7K
KALSHIWill WHO declare Hantavirus a Public Health Emergency of International Concern this Year?
- No96%
- Yes+0.2pt4%
- Total Vol
- $1.9M
- 24h Vol
- $6K
KALSHIHow many major Atlantic hurricanes will there be in 2026?
- Above 0+7.0pt46.1%
- Above 1+20.0pt38.5%
- Above 2-10.0pt7.7%
+5 more outcomes
- Total Vol
- Min Arctic sea ice extent this summer?
- How many 5.5 or above earthquakes worldwide September 7 - September 13?
- Will 2026 be the hottest year ever?
- 9.0 or above earthquake before 2027?
- Major volcano eruption in 2026?
- Where will 2026 rank among the hottest years on record?
- When will Compass Pathways submit a NDA for COMP360 psilocybin?
- How many human screwworm cases will be reported in the United States in 2026?
- US grants license for new nuclear reactor before 2027?
- What will be the largest source of global primary energy consumption in 2030?
Frequently asked questions
- What are the current odds for Is the answer to the Sleeping Beauty Problem 1/3??
- Manifold Markets prices No at 64% as of September 8, 2026.
- When does Is the answer to the Sleeping Beauty Problem 1/3? resolve?
- Is the answer to the Sleeping Beauty Problem 1/3? is scheduled to resolve on October 28, 2030.
- How is Is the answer to the Sleeping Beauty Problem 1/3? settled?
- Manifold Markets settles this market as follows: https://en.m.wikipedia.org/wiki/Sleeping_Beauty_problem