Repository of problems worth solving
World Solve is a public institutional repository for identifying real unresolved problems across science, society, health, governance, economics, and local systems. Each entry is intended to be citable, inspectable, and actionable.
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4194Total
4194Open
0Solved
9Humans
open
Global / Unspecified, Global
Fair division problems become extremely complex once individual preferences differ, and general efficient solutions for many people remain incompletely understood. This connects mathematics to real-world negotiation and resource allocation.
mathematics-logic
global-unspecified
number
people
preferences
haven
proven
whether
always
possible
divide
cake
know
resolved
philosophy-ethics
every
mathematical
open
Global / Unspecified, Global
Finding the shortest possible route through many locations becomes exponentially harder as the number of locations grows, and no efficient exact solution is known for all cases. This unresolved question sits at the heart of computational optimization theory.
mathematics-logic
global-unspecified
efficient
haven
determined
whether
there
way
solve
every
instance
traveling
know
possible
philosophy-ethics
resolved
mathematical
open
Global / Unspecified, Global
Some cellular automata, like simple grid-based rule systems, produce behavior so complex that no shortcut prediction method has been proven to exist beyond simply running the simulation. This unresolved question touches on computational irreducibility and the philosophy of prediction.
philosophy-ethics
global-unspecified
complex
cellular
shortcut
haven
determined
whether
possible
perfectly
predict
outcome
know
mathematics-logic
resolved
every
mathematical
open
Global / Unspecified, Global
Fair division theory has strong results for two-party negotiations, but multi-party fairness guarantees become significantly harder to prove in full generality. This unresolved area connects mathematics with real-world conflict resolution.
mathematics-logic
global-unspecified
fair
don
know
whether
mathematically
possible
guarantee
perfectly
outcome
any
philosophy-ethics
haven
resolved
every
open
Global / Unspecified, Global
Probability theory offers strong predictive tools for many games, but a fully complete and general model covering every conceivable game of chance remains theoretically unresolved. This touches both pure mathematics and the philosophy of randomness.
mathematics-logic
global-unspecified
possible
complete
model
every
game
chance
haven
proven
whether
construct
know
resolved
philosophy-ethics
mathematical
open
Global / Unspecified, Global
Some believe unresolved anger should eventually give way to forgiveness for the sake of personal peace, while others argue there's no moral deadline for healing from serious harm. This unresolved tension shapes both personal relationships and broader restorative justice practices.
society-governance
global-unspecified
way
forgiveness
don
have
agreed
determine
whether
fair
expect
come
philosophy-ethics
resolved
know
haven
open
Global / Unspecified, Global
Focusing resources and attention on the most vulnerable can come at some cost to overall group efficiency or advancement, creating an unresolved tension between compassion and collective progress. This tension appears throughout education, healthcare, and social policy.
philosophy-ethics
global-unspecified
group
vulnerable
progress
don
know
whether
ethical
prioritize
wellbeing
members
resolved
haven
determine
mathematics-logic
open
Global / Unspecified, Global
Ambitious pursuits can sometimes indirectly disadvantage others even without any deliberate intention to cause harm, raising unresolved questions about how much responsibility ambition carries. This tension appears throughout competitive personal and professional life.
philosophy-ethics
global-unspecified
personal
ambition
others
harm
don
know
whether
ethical
allow
come
resolved
haven
determine
mathematics-logic
open
Global / Unspecified, Global
Justice and mercy can pull in opposite directions in specific cases, and no ethical framework has fully resolved which should take priority when they genuinely conflict. This unresolved tension remains central to debates in both personal ethics and criminal justice.
philosophy-ethics
global-unspecified
justice
ethical
mercy
don
know
whether
allow
pursuit
sometimes
come
resolved
haven
determine
mathematics-logic
open
Global / Unspecified, Global
Genuine empathy is often praised as essential to moral understanding, but it's unclear how much true empathy is even possible without any lived proximity to another's specific suffering. This unresolved tension complicates how we approach compassion across vastly different life experiences.
philosophy-ethics
global-unspecified
empathy
experiences
don
have
resolved
way
determine
whether
fair
expect
know
haven
mathematics-logic
open
Global / Unspecified, Global
Concern about lasting impact or how one will be remembered can sometimes come at the expense of enjoying and prioritizing present-day happiness. This unresolved tension shapes how people balance long-term purpose with everyday contentment.
philosophy-ethics
global-unspecified
present-day
don
know
whether
ethical
allow
pursuit
legacy
outweigh
genuine
resolved
haven
determine
mathematics-logic
open
Global / Unspecified, Global
Being emotionally available to others is often seen as a virtue, but constant availability can come at a real cost to a person's own wellbeing and boundaries. This unresolved tension shapes debates over compassion fatigue and the limits of caregiving.
philosophy-ethics
global-unspecified
emotionally
available
don
have
agreed
way
determine
whether
fair
expect
resolved
know
haven
open
Global / Unspecified, Global
Retributive theories argue wrongdoers deserve punishment regardless of outcomes, while consequentialist views justify it only if it produces better results. This unresolved disagreement shapes debates over criminal justice reform.
society-governance
global-unspecified
punishment
only
don
know
ever
truly
justified
useful
deterrent
retributive
philosophy-ethics
whether
resolved
haven
determine
mathematics-logic
open
Global / Unspecified, Global
If aesthetic judgments are purely subjective, calling any art objectively better than another becomes philosophically difficult to defend. Yet most people act as though some works are genuinely superior, not just differently liked.
philosophy-ethics
global-unspecified
aesthetic
haven
figured
out
whether
beauty
value
objective
entirely
dependent
resolved
know
mathematics-logic
determine
possible
open
Global / Unspecified, Global
We tend to believe humanity has become more moral over time, abolishing slavery and expanding rights, but philosophers debate whether this represents real progress or just changing preferences. Settling this affects how confident we can be about future ethical judgments.
philosophy-ethics
global-unspecified
whether
moral
progress
ethical
don
know
genuinely
possible
views
simply
resolved
haven
determine
mathematics-logic
open
Global / Unspecified, Global
As artificial systems become more sophisticated, the possibility that some could genuinely suffer raises serious unresolved questions about the ethics of their creation and use. This concern will likely intensify as the technology matures.
philosophy-ethics
global-unspecified
artificial
don
know
whether
ethical
create
beings
capable
suffering
purely
resolved
haven
mathematics-logic
determine
open
Global / Unspecified, Global
Some argue certain hardships build character or understanding in ways that make them valuable in hindsight, while others reject the idea that suffering is ever truly redeemed by its outcomes. This unresolved question shapes how we think about adversity.
philosophy-ethics
global-unspecified
suffering
ever
haven
figured
out
whether
justified
leads
greater
personal
know
resolved
mathematics-logic
determine
possible
ethical
open
Global / Unspecified, Global
Two people can make the same decision, but only one faces a bad outcome due to pure chance, raising the question of whether they deserve different moral judgment. This unresolved issue challenges standard assumptions about fairness in blame and praise.
philosophy-ethics
global-unspecified
whether
moral
don
know
luck
affect
judge
person
actions
people
resolved
haven
determine
mathematics-logic
possible
open
Global / Unspecified, Global
Some argue outcomes matter most regardless of how they were achieved, while others believe the means used fundamentally taint the value of the result. This unresolved tension appears throughout debates in both personal ethics and public policy.
philosophy-ethics
global-unspecified
achieved
means
value
don
have
resolved
way
determine
whether
good
know
haven
mathematics-logic
ethical
open
Global / Unspecified, Global
Respecting cultural autonomy suggests restraint, but some practices are considered so harmful that many argue intervention becomes a moral obligation despite this respect. This unresolved tension complicates international human rights advocacy.
philosophy-ethics
global-unspecified
moral
haven
resolved
whether
humans
have
duty
intervene
failings
know
determine
mathematics-logic
don
ethical