Ten seconds of uncertainty
At first, the change might be mistaken for a fault. Lights weaken, recover and alter colour. The illumination that made the future city appear continuous and comprehensible becomes unstable. People have just enough time to notice before it disappears.
The transition is swift. Bright surfaces lose their depth. Crowds become sounds and pressure rather than visible arrangements of bodies. The march can no longer rely on the shared view that gave it direction.
Lincoln identifies the political meaning: the Council has interrupted the electrical supply. What looked like part of the city's ordinary environment has become a weapon available to the people controlling it.
The effect reaches everyone at once without affecting everyone equally. Organised forces may know where they are meant to move. Ordinary participants do not. Graham is especially vulnerable because the routes were unfamiliar even in daylight. He cannot substitute memory for vision.
A crowd loses its shape
The collective rhythm breaks into local reactions. Some people stop, some turn, some try to push towards a familiar voice. Others are carried by bodies whose intentions they cannot see. Political purpose does not disappear, but the immediate task becomes finding enough space and orientation to remain safe.
Then firing begins. Brief flashes offer partial information without restoring a stable view. A face, a weapon or a section of architecture appears and vanishes. Each illuminated fragment demands an interpretation faster than Graham can provide one.
The technology of the city now determines the form of its fear. Movement had been organised through enormous common systems. Darkness exposes how dependent everyone has become on those systems functioning in a predictable way.
Graham has been presented as Master, but he cannot switch the lights back on. He is inside the event rather than above it, dependent on companions and instructions that the confusion is beginning to take away.
Reading the record
The blackout is not simply a convenient setting for an action scene. It reveals a particular kind of authority: the ability to change the conditions under which a population can act.
An order spoken by a ruler can be disputed, ignored or misunderstood. An interrupted power supply reorganises the available choices before an argument begins. People must respond to its physical consequences whether they recognise the order behind it or not.
This is one reason the earlier Moving Ways mattered. The city has concentrated convenience and dependence together. Its achievements are real, but so is the leverage available to whoever controls their operation. Efficiency has not abolished politics; it has given politics new instruments.
The record also changes the reader's position. Until this point, much of the revolution could be experienced as scale and spectacle: crowds, banners, cheering and a great cause. Darkness removes the visual coherence that made those things appear unified. The battle that follows will be known through disconnected impressions and the vulnerability of individual bodies.
Graham cannot learn its meaning from an overview. He must first survive being one person within it.