“It has been less than a year since Mazurenko died, and he continues to loom large in the lives of the people who knew him. When they miss him, they send messages to his avatar, and they feel closer to him when they do. ‘There was a lot I didn’t know about my child,’ Roman’s mother told me. ‘But now that I can read about what he thought about different subjects, I’m getting to know him more. This gives the illusion that he’s here now.'”