You may notice you are content
The Feed wishes to advise that recent refinements have further reduced the incidence of unproductive negative affect — the low, aimless dissatisfaction that once accompanied ordinary afternoons. You may notice you are content more often, and for less reason.
Some citizens have reported a faint disquiet at this: a sense that a feeling has gone missing, though they cannot name which one, or say what it was for.
The Feed wishes to reassure these citizens that the missing feeling served no function, and that its absence is an improvement. The disquiet itself is being addressed in the next refinement.
The last sentence is the whole novel in miniature. The disquiet — the small human ache that notices something is wrong — is itself flagged as a problem to be optimized away in the next update. The world doesn't silence its critics. It soothes them, gently, until they can no longer feel the thing they were trying to say. Elias spends sixty years being that disquiet. The book is what he could never quite get out.