One of the funny things about it, in retrospect, was its slowness, the lack of any dramatic Moment When It Had Happened. It was a little bit like the world’s adoption of the Internet, which had started with a few nerds and within decades become so ubiquitous that no person under thirty could really grasp what life had been like before you could Google everything. In retrospect, the Internet had been a revolution in human affairs, but one that had taken place just slowly enough that those who’d lived through it had had time to adjust in modest increments. But, centuries from now, people—if there were any—would see it as having happened in the blink of an eye.

Lying there in the gutter with her blown-up knees, Zula felt ignored by everyone: her ex-husband and her dead uncle and her dead daughter as well as the living humans all around her too wrapped up in the mysterious activities of the dead to look out the windows of their cars or apartments and notice her predicament. She was carrying electronic devices that she could have used to summon assistance, but the accident had put her into a strangely placid frame of mind, and she was content to lie there and relax for a minute or two. Then water began to soak up through her clothing and her knees really began to hurt.

A cop car pulled up and turned on its red and blue flashing LEDs. All other traffic vanished from the block as word got out among the civilian vehicles. Zula couldn’t tell, from her pavement-level viewpoint, whether there were any humans in the cop car. It disgorged a robot about the size of one of your larger microwave ovens, which ambulated over to her on elaborate triangular devices that sometimes worked like tank treads, sometimes tumbled vertex-over-vertex like ungainly wheels, other times elbowed along like old-school GIs belly-crawling under barbed wire. A couple of aerial drones showed up to supply even more unflattering camera angles. She had a brief conversation with a face on a screen, the purpose of which was to establish that she was not crazy or dangerous. She couldn’t really make out whether the face was a video feed of a live human, a simulation, or some blended combination of both.

More vehicles showed up. Humans got out of them, pulling on gloves, and did nothing except watch a different kind of robot—an intelligent stretcher/gurney—approach Zula. The logo was that of a Japanese company. They’d long ago begun thinking about how to build robots that would handle many of the routine functions of keeping senior citizens safe, clean, and healthy.