- D-503 and I-330 discuss their plans for the Integral re: letting MEPHI take it over.
- D- maintains that revolution will be impossible since the last revolution has been achieved. I- tells him to name the highest number—tricking him with math!—and insists that there can be no final revolution
- The conversation upsets D- and he goes for a walk after I- leaves. He passes an empty auditorium, and freaks out—again—because nobody knows what's going to happen tomorrow.