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
buildings constructed on unsafe soft soil remains one of the most urgent challenges of our time. Systems currently in place are inadequate for the scale and complexity of the problem. A successful approach must work where resources are scarcest and demonstrate clear, measurable results. It should identify possible harms, respect local agency, and show how the solution can be maintained and expanded by the communities it is meant to serve.
successful
buildings
constructed
unsafe
soft
other
open
Global / Unspecified, Global
Even after an AI model is retired, techniques exist that can sometimes extract fragments of its original training data, posing ongoing privacy risks. Fully preventing this kind of data leakage after decommissioning remains unresolved.
society-governance
global-unspecified
data
model
don
have
way
guarantee
decommissioned
learned
reconstructed
attackers
whether
philosophy-ethics
resolved
determine
agreed
open
Global / Unspecified, Global
Certain constructions, like doubling a cube's volume using classical tools, were proven impossible, but a full classification of every possible constructible versus non-constructible case remains an evolving area. This connects ancient geometry with modern algebra.
mathematics-logic
global-unspecified
don
know
whether
set
numbers
never
precisely
constructed
only
compass
haven
possible
resolved
philosophy-ethics
every
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
open
Global / Unspecified, Global
Ramsey-type theorems guarantee certain patterns emerge under specific conditions, but a fully general guarantee covering every conceivable infinite sequence remains an incomplete and active area of study. This connects deeply to combinatorics and the philosophy of mathematical order.
mathematics-logic
global-unspecified
every
infinite
mathematical
sequence
specific
don
know
whether
possible
must
haven
resolved
philosophy-ethics
open
Global / Unspecified, Global
Gödel's theorems confirm this for many well-known systems, but whether every conceivable finite proof system inevitably faces this limitation remains an unresolved logical question. This continues to shape foundational research into the nature of formal systems.
mathematics-logic
global-unspecified
whether
every
finite
proof
system
haven
determined
mathematical
must
eventually
philosophy-ethics
resolved
know
possible