Seconding Vladimir_Nesov’s correction—for context, the original quote, in context:
I feel like grabbing hold of him and shaking the metaphysical stuffing out; instead I say evenly, “I’m asking you to help me. I don’t care how experience is constructed. I don’t care if time is an illusion. I don’t care if nothing’s real until it’s five minutes old. It all adds up to normality—or it ought to. It used to. And don’t tell me everyone smears a hundred times a day; everyone does not suffer hallucinations, mod failures—”
Seconding Vladimir_Nesov’s correction—for context, the original quote, in context:
The phrase was used in the novel multiple times, and less confusingly so on other occasions. For example:
I apologize—I haven’t read the book.