As soon as the microchip inside Justin's deadbolt lock shook hands with the one in his key, his apartment came to life. Lamps came on. The stereo started playing the Pulp CD he'd left in there this morning. The broiler heated up to do the steak the computer knew was in the refrigerator. From the bedroom, the computer called, "Now or later?"

"Later," Justin said, so the screen stayed dark.

He went into the kitchen and tossed a couple of pieces of spam snailmail into the blue wastebasket for recycling. The steak went under the broiler; frozen mixed vegetables went into the microwave. Eight minutes later, dinner.

After he finished, he rinsed the dishes and silverware and put them in the dishwasher. When he closed the door, the light inside came on; the machine judged itself full enough to run a cycle in the middle of the night.

Like the kitchen, his front room was almost as antiseptically tidy as his cubicle at Superstrings. But for a picture of Megan and him on their honeymoon, the coffee table was bare. All his books and DVDs and audio CDs were arranged alphabetically by author, title, or group. None stood even an eighth of an inch out of place. It was as if none of them dared move without his permission.

He went into the bedroom. "Now," he said, and the computer monitor came to life.

A picture of Megan and him stood on the dresser, another on the nightstand. Her high school graduation picture smiled at him whenever he sat down at the desk. Even after all these years, he smiled back most of the time. He couldn't help it. He'd always been happy around Megan.

But she hadn't been happy around him, not at the end. Not for a while before the end, either. He'd been a long, long time realizing that. "Stupid," he said. He wasn't smiling now, even with Megan's young, glowing face looking right at him out of the picture frame. "I was stupid. I didn't know enough. I didn't know how to take care of her."