We haven't solved whether every even number greater than two is the sum of two primes.
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Mathematics & Logic
Known as Goldbach's Conjecture, this simple-sounding statement has been checked for enormous numbers without exception, but never formally proven true for all numbers. It remains one of the oldest unsolved problems in mathematics.
Team Humans Club. (2026). Problem WS00135: We haven't solved whether every even number greater than two is the sum of two primes.. World Solve. Retrieved 20 Jul 2026, from https://worldsolve.org/index.php?id=135
We don't have a complete theory predicting how prime numbers are distributed.
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Mathematics & Logic
Prime numbers appear to follow patterns at large scales but seem random up close, and mathematicians still lack a full explanation for this behavior. Understanding it better could improve encryption methods that rely on primes.
Team Humans Club. (2026). Problem WS00134: We don't have a complete theory predicting how prime numbers are distributed.. World Solve. Retrieved 20 Jul 2026, from https://worldsolve.org/index.php?id=134
We haven't proven the Riemann Hypothesis, a problem central to understanding prime numbers.
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Mathematics & Logic
This century-old conjecture predicts a hidden pattern in how prime numbers are distributed, but nobody has ever proven it true. A proof would deepen our understanding of numbers in ways that ripple into cryptography and physics.
Team Humans Club. (2026). Problem WS00133: We haven't proven the Riemann Hypothesis, a problem central to understanding prime numbers.. World Solve. Retrieved 20 Jul 2026, from https://worldsolve.org/index.php?id=133
We still don't know whether every math problem that's easy to check is also easy to solve.
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Mathematics & Logic
Known as the P versus NP problem, this asks whether problems whose solutions are easy to verify are also easy to find in the first place. Answering it would reshape computer science, cryptography, and optimization overnight.
Team Humans Club. (2026). Problem WS00132: We still don't know whether every math problem that's easy to check is also easy to solve.. World Solve. Retrieved 20 Jul 2026, from https://worldsolve.org/index.php?id=132
We haven't settled who should decide what values a global AI system should hold.
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Philosophy & Ethics
As AI systems increasingly influence what billions of people see, believe, and decide, someone is effectively choosing the values baked into those systems. There's no agreed process for who that someone should be, or how they should be held accountable.
Team Humans Club. (2026). Problem WS00131: We haven't settled who should decide what values a global AI system should hold.. World Solve. Retrieved 20 Jul 2026, from https://worldsolve.org/index.php?id=131
We don't agree on how much punishment is justice versus revenge.
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Philosophy & Ethics
Justice systems around the world vary wildly in how harshly they punish the same crimes, reflecting different beliefs about what punishment is actually for. Whether punishment should aim to rehabilitate, deter, or simply punish remains unresolved.
Team Humans Club. (2026). Problem WS00130: We don't agree on how much punishment is justice versus revenge.. World Solve. Retrieved 20 Jul 2026, from https://worldsolve.org/index.php?id=130
We haven't found a universal answer to what a meaningful life requires.
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Philosophy & Ethics
Different cultures, religions, and individuals define meaning and purpose in very different ways, with no way to prove one view more correct than another. This makes questions about how to live well deeply personal rather than settled.
Team Humans Club. (2026). Problem WS00129: We haven't found a universal answer to what a meaningful life requires.. World Solve. Retrieved 20 Jul 2026, from https://worldsolve.org/index.php?id=129
We don't agree on the limits of free speech when speech can cause real, measurable harm.
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Philosophy & Ethics
Free expression is valued almost everywhere, but so is protection from harassment, incitement, and harmful misinformation, and these values often conflict directly. No universal line exists for where one right ends and the other begins.
Team Humans Club. (2026). Problem WS00128: We don't agree on the limits of free speech when speech can cause real, measurable harm.. World Solve. Retrieved 20 Jul 2026, from https://worldsolve.org/index.php?id=128
We haven't settled how societies should treat people who cannot work due to automation.
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Philosophy & Ethics
As machines take over more jobs, some people may be unable to find meaningful paid work through no fault of their own. Whether society owes them support, and how much, remains a contested ethical and political question.
Team Humans Club. (2026). Problem WS00127: We haven't settled how societies should treat people who cannot work due to automation.. World Solve. Retrieved 20 Jul 2026, from https://worldsolve.org/index.php?id=127
We don't have an agreed ethical stance on creating artificial minds capable of suffering.
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Philosophy & Ethics
If AI systems ever become capable of something like suffering, we would have created that suffering deliberately, and we don't have a moral framework ready for that possibility. This question is likely to become urgent faster than expected.
Team Humans Club. (2026). Problem WS00126: We don't have an agreed ethical stance on creating artificial minds capable of suffering.. World Solve. Retrieved 20 Jul 2026, from https://worldsolve.org/index.php?id=126
We haven't found a shared standard for what counts as a fair distribution of global resources.
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Philosophy & Ethics
Some countries and individuals consume vastly more resources than others, and there's no broadly accepted definition of what a fair share would even look like. This makes global cooperation on resource use difficult to justify to everyone involved.
Team Humans Club. (2026). Problem WS00125: We haven't found a shared standard for what counts as a fair distribution of global resources.. World Solve. Retrieved 20 Jul 2026, from https://worldsolve.org/index.php?id=125
We don't agree on how much say future generations should have in decisions made today.
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Philosophy & Ethics
Choices made now about climate, debt, and resource use will affect people who don't yet exist and have no voice in the decision. Philosophy hasn't settled how much weight their unheard interests should carry.
Team Humans Club. (2026). Problem WS00124: We don't agree on how much say future generations should have in decisions made today.. World Solve. Retrieved 20 Jul 2026, from https://worldsolve.org/index.php?id=124
We haven't settled whether it's right to extend human life indefinitely if we could.
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Philosophy & Ethics
Advances in medicine keep pushing life expectancy higher, but there's no consensus on whether radically extending life is actually good for individuals or society. This question becomes more urgent as anti-aging research advances.
Team Humans Club. (2026). Problem WS00123: We haven't settled whether it's right to extend human life indefinitely if we could.. World Solve. Retrieved 20 Jul 2026, from https://worldsolve.org/index.php?id=123
We don't have a widely accepted framework for who deserves blame when AI causes harm.
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Philosophy & Ethics
When an autonomous system makes a harmful choice, moral responsibility is hard to pin on any single party, the programmer, the company, or the AI itself. Ethics hasn't caught up with the reality of decisions made without direct human involvement.
Team Humans Club. (2026). Problem WS00122: We don't have a widely accepted framework for who deserves blame when AI causes harm.. World Solve. Retrieved 20 Jul 2026, from https://worldsolve.org/index.php?id=122
We haven't found a shared answer to how much personal freedom should be limited for public good.
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Philosophy & Ethics
Vaccine mandates, speed limits, and lockdown policies all raise the same underlying question of how much individual liberty should bend for collective benefit. Different people and cultures answer this very differently, with no clear resolution.
Team Humans Club. (2026). Problem WS00121: We haven't found a shared answer to how much personal freedom should be limited for public good.. World Solve. Retrieved 20 Jul 2026, from https://worldsolve.org/index.php?id=121
We don't agree on how to weigh animal suffering against human convenience.
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Philosophy & Ethics
Factory farming, animal testing, and habitat destruction all cause animal suffering for human benefit, but there's no consistent ethical standard for how much suffering is acceptable and why. This gap shows up in inconsistent laws and practices worldwide.
Team Humans Club. (2026). Problem WS00120: We don't agree on how to weigh animal suffering against human convenience.. World Solve. Retrieved 20 Jul 2026, from https://worldsolve.org/index.php?id=120
We haven't settled what obligations wealthy nations owe to those harmed by their historical actions.
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Philosophy & Ethics
Colonization, slavery, and resource extraction left lasting harm in many parts of the world, and debates over reparations or restitution remain unresolved almost everywhere they're raised. There's no broadly accepted framework for addressing this.
Team Humans Club. (2026). Problem WS00119: We haven't settled what obligations wealthy nations owe to those harmed by their historical actions.. World Solve. Retrieved 20 Jul 2026, from https://worldsolve.org/index.php?id=119
We don't have a clear ethical line for editing the genes of unborn children.
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Philosophy & Ethics
Gene editing could prevent serious diseases, but it also opens the door to selecting traits that have nothing to do with health. Society hasn't agreed on where prevention ends and something more troubling begins.
Team Humans Club. (2026). Problem WS00118: We don't have a clear ethical line for editing the genes of unborn children.. World Solve. Retrieved 20 Jul 2026, from https://worldsolve.org/index.php?id=118
We haven't agreed on how much responsibility individuals bear for problems caused by entire systems.
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Philosophy & Ethics
Climate change, inequality, and other large problems result from systems, not just individual choices, yet blame and responsibility are still often placed on individuals. How we think about this shapes both policy and personal guilt.
Team Humans Club. (2026). Problem WS00117: We haven't agreed on how much responsibility individuals bear for problems caused by entire systems.. World Solve. Retrieved 20 Jul 2026, from https://worldsolve.org/index.php?id=117
We don't have a shared answer for how much privacy people should give up for safety.
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Philosophy & Ethics
Surveillance can prevent crime and terrorism, but it also erodes personal freedom, and there's no consensus on where the right balance lies. Different societies draw this line in very different places.
Team Humans Club. (2026). Problem WS00116: We don't have a shared answer for how much privacy people should give up for safety.. World Solve. Retrieved 20 Jul 2026, from https://worldsolve.org/index.php?id=116