open problems
Mysteries awaiting solutions
Open problems are unsolved questions in a field of study, particularly mathematics and science.
A problem remains open until someone proves or disproves it conclusively.
The term implies active interest—researchers are working on it, not that it's been abandoned: The Riemann hypothesis remains one of mathematics' most famous open problems.
In casual use, open problems can refer to any unresolved issues awaiting solutions.
- challengesDifficulties requiring effort
- questionsRequests for information
- unsolvedNot yet figured out
- mysteriesUnexplained phenomena or events
- dilemmasDifficult choices between alternatives
conundrums · paradoxes · puzzles · hypotheses · unknowns · conjectures · moral dilemmas · uncertainties · sciences · mathematics · AI ethics · medical mysteries · research · existential risks · theories · frontiers · uncharted territory · cutting edge
open problemsscientific consensus
Prevailing expert judgment
received wisdom · axioms · proven results · certainties · truisms
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