The response to Petra's invitation comes Tuesday morning.
Petra is in the east wing corridor with her maintenance clipboard when the message arrives and she does not see it until she comes to the operations room at ten. I am at the table. She sits across from me and she opens the message on her phone and she reads it.
She reads it twice.
She puts the phone on the table.
"She responded," she says.
"Yes," I say.
"Her name is Sophie," Petra says. "The thirty seven year old. Her name is Sophie and she was adjacent to the network through her employer's instrument for eighteen months when she was twenty two and she has been carrying the knowledge of it for fifteen years." She pauses. "She said she did not know anyone else knew. She said she thought the record would never include her becaus
