Contingency and Superfluity
NauseaThis flow traces Roquentin’s recognition that existence has no necessary justification and that human beings share the condition of being superfluous.
increasing
Bearing strength in each event
decreasing
The Demand for a Reason

The Demand for a Reason
Why is anything here?
Roquentin’s changing perceptions lead him to ask why the world exists instead of nothing. His mind seeks a cause or purpose, but the existence of things does not arrive with an explanation.
Reason reaches a limit
The question is not solved by adding more classifications or historical detail. Roquentin begins to distinguish explanations of how things work from an account of why they exist at all.
The World Is Without Necessity

The World Is Without Necessity
No cause can secure being
The root appears without a necessary reason that Roquentin can discover. It simply exists, and its presence resists being justified by the functions or stories attached to it.
Contingency becomes absolute
He understands that existence is not merely an unlikely event waiting for further explanation. It is the fact of being there, ungrounded and excessive, which changes his sense of the world.
Everyone Is Superfluous

Everyone Is Superfluous
Privilege loses its guarantee
Roquentin sees that social rank and claims of right cannot make a person’s existence necessary. The elite and the ordinary share the same contingent condition beneath their different roles.
Freedom without a cosmic warrant
The recognition does not deny human choices, but removes the idea that nature or history has already authorized them. People remain free and vulnerable, unable to avoid feeling superfluous simply by claiming entitlement.
During Roquentin’s early reflections
During the chestnut-root encounter
After Roquentin leaves the garden