Use 'hinge upon' to express that a successful outcome is uncertain and depends on a specific factor.

Conditional Success

'Hinge upon' is figurative and should not be used to describe physical objects connected by hinges.

Not Literal

Often highlights a single, crucial reason that will determine the final result.

'Hinge upon' can show how one's actions can influence a situation or outcome.

Used to state that a result is contingent on another event or condition happening first.

Highlights the influence of a specific factor over a general situation.