Paulie Gifford, a mathematician going for tenure at his university, the same university where his father was a Professor Emeritus until his death just before the start of this story. Paulie and his father had been collaborating on a proof of a mathematical theorem--and on top of losing his father, Paulie has just lost his research partner.
But, in this world, at an unspecified point in our future, there is a technology called Coda; it records a dying person's brain in the moments of death. The recording is interactive, and "knows" everything the deceased knew at the time of death. It can't form new memories, but family members can "enter" the Coda, talk to this recording of the deceased, and ask such mundane and important questions as, "Do you have an insurance policy?"





