a chicken-and-egg situation, problem, etc.
idiomPart ofchicken
a chicken-and-egg situation, problem, etc. — idiom
1. A situation where it is unclear which of two things caused the other.
1.idiom
Definition
A situation where it is unclear which of two things caused the other.
Example
Mia faced a chicken-and-egg situation: she needed experience to get a job, but a job to get experience.
Is poverty the cause of crime, or crime the cause of poverty? It's a chicken-and-egg problem.