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
Government databases holding sensitive information, from tax records to health data, have been breached repeatedly, exposing citizens to fraud and identity theft. Stronger, consistent data protection standards remain unevenly applied across agencies.
technology-computing
global-unspecified
data
citizens
collected
governments
often
poorly
protected
against
misuse
breach
society-governance
whether
systems
philosophy-ethics
african
incomplete
open
Global / Unspecified, Global
Complicated issues like constitutional changes or international agreements are occasionally put to a simple yes or no vote, even though the details matter enormously and most voters can't research them fully in advance. This risks major decisions being made on incomplete understanding.
society-governance
global-unspecified
referendums
sometimes
bypass
careful
deliberation
deeply
complex
policy
questions
complicated
decisions
evidence
local
communities
philosophy-ethics
whether
open
Global / Unspecified, Global
Workers and entire regional economies built around coal, oil, and gas face major disruption as the world shifts to cleaner energy. A fair, well-funded transition plan for these communities remains incomplete in most countries.
local-regional
global-unspecified
fair
transition
don
have
approach
managing
away
fossil
fuel
whether
philosophy-ethics
determine
resolved
way
agreed
mathematics-logic
open
Global / Unspecified, Global
Enormous amounts of human knowledge and art remain physically locked inside buildings that most of the world's population will never get to visit in person. Making this content genuinely accessible remotely remains incomplete.
health-biology
global-unspecified
world
accessible
visit
yet
make
museums
libraries
around
fully
people
whether
philosophy-ethics
haven
mathematics-logic
resolved
determine
open
Global / Unspecified, Global
Much of humanity's cultural knowledge lives only in memory, passed down verbally, and disappears permanently when the last person who remembers it dies. Systematic preservation efforts remain underfunded and incomplete.
philosophy-ethics
global-unspecified
last
haven
solved
preserve
oral
histories
traditions
speakers
keepers
pass
whether
resolved
determine
mathematics-logic
endangered
languages
open
Global / Unspecified, Global
High-interest, exploitative loans continue to target people with limited financial options, often trapping them in cycles of debt. Stronger, consistently enforced protections against this remain incomplete in many regions.
health-biology
global-unspecified
don
have
reliable
way
prevent
predatory
lending
practices
targeting
vulnerable
whether
philosophy-ethics
determine
resolved
agreed
open
Global / Unspecified, Global
Local elections often receive far less security attention than national ones, despite being just as vulnerable to disinformation campaigns. Extending stronger protections down to the local level remains incomplete.
society-governance
global-unspecified
local
elections
disinformation
haven
solved
protect
spread
foreign
domestic
actors
might
mathematics-logic
economics-resources
science-space
workers
turn
open
Global / Unspecified, Global
Human trafficking networks exploit gaps between countries' laws and enforcement capacity, moving victims across borders largely undetected. A stronger, coordinated international strategy remains incomplete.
society-governance
global-unspecified
strategy
human
trafficking
borders
don
have
effective
prevent
networks
philosophy-ethics
whether
determine
resolved
way
agreed
open
Global / Unspecified, Global
Slow, uneven international coordination has repeatedly allowed outbreaks to spread further than they might have with faster joint action. A better-prepared global response system remains incomplete despite repeated warnings.
health-biology
global-unspecified
system
response
spread
yet
build
quickly
coordinate
pandemics
widely
whether
philosophy-ethics
mathematics-logic
resolved
determine
have
don
open
Global / Unspecified, Global
Gödel's incompleteness theorems already showed some truths escape any fixed formal system, but the full boundary between provable and unprovable truths remains an active area of exploration. This shapes how we understand the limits of formal reasoning itself.
mathematics-logic
global-unspecified
system
don
know
every
mathematical
statement
seems
true
eventually
proven
whether
philosophy-ethics
resolved
haven
possible
open
Global / Unspecified, Global
While specific solutions exist for certain rectangles, a full general theory predicting exactly which rectangles allow this kind of tiling remains incomplete. This puzzle blends recreational mathematics with serious combinatorics.
mathematics-logic
global-unspecified
haven
proven
whether
possible
always
tile
rectangle
perfectly
only
squares
know
resolved
philosophy-ethics
every
mathematical
open
Global / Unspecified, Global
Gödel's incompleteness theorem confirms this for many systems, but fully mapping which systems are exempt, if any, from this limitation remains an open and active question. This continues to shape foundational debates in mathematical logic.
mathematics-logic
global-unspecified
don
know
whether
every
sufficiently
complex
logical
system
must
eventually
philosophy-ethics
resolved
haven
systems
possible
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
Ramsey-type problems ask whether order must always emerge within sufficiently large or complex systems, and while some cases are proven, the general boundaries remain incompletely mapped. This connects deeply to combinatorics and the philosophy of mathematical order.
mathematics-logic
global-unspecified
structure
whether
mathematical
must
always
don
know
every
finite
certain
haven
resolved
philosophy-ethics
possible
open
Global / Unspecified, Global
Graph theory offers many partial answers about guaranteed patterns within large networks, but a fully general and complete theory covering every possible network structure remains incomplete. This affects our understanding of everything from social networks to biological systems.
mathematics-logic
global-unspecified
every
network
haven
determined
whether
sufficiently
complex
connections
must
always
possible
philosophy-ethics
resolved
know
mathematical
open
Global / Unspecified, Global
Game theory has solved many two-player scenarios completely, but multiplayer games with shifting alliances and incomplete information remain far less understood in full generality. This unresolved question has real implications for economics and political strategy.
economics-resources
global-unspecified
strategy
multiplayer
games
don
know
whether
every
possible
complex
reduced
philosophy-ethics
resolved
haven
mathematics-logic
mathematical
open
Global / Unspecified, Global
Economic models often assume equilibrium is reachable under certain conditions, but proving this holds true across every possible complex real-world scenario remains mathematically incomplete. This connects pure mathematics directly to economic theory.
economics-resources
global-unspecified
every
possible
mathematically
equilibrium
haven
resolved
whether
strategy
resource-limited
economy
mathematics-logic
know
philosophy-ethics
mathematical
open
Global / Unspecified, Global
Some deterministic functions produce output so irregular it resembles randomness, and a complete classification of exactly which rules produce this behavior remains incomplete. This unresolved boundary connects number theory, chaos theory, and computer science.
mathematics-logic
global-unspecified
deterministic
don
know
whether
possible
fully
characterize
every
mathematical
function
haven
philosophy-ethics
resolved
open
Global / Unspecified, Global
Games involving bluffing or incomplete knowledge, like certain card games, resist the same clean mathematical solutions available for games of complete information. This unresolved question remains central to advanced game theory research.
mathematics-logic
global-unspecified
game
information
hidden
games
haven
determined
whether
every
possible
strategy
philosophy-ethics
resolved
know
mathematical
open
Global / Unspecified, Global
Reconstruction problems in geometry ask how much partial information is truly enough to rebuild a full shape with certainty, and general limits for all shape classes remain incompletely understood. This connects pure mathematics to practical fields like imaging and tomography.
mathematics-logic
global-unspecified
shape
haven
determined
whether
every
finite
geometric
always
perfectly
reconstructed
know
resolved
possible
philosophy-ethics
mathematical