Aya is a data infrastructure engineer in Sapporo who is good at her job and careful about most things. The entity she calls Pip is small, quiet, and appears to be optimizing her life one unasked-for intervention at a her code, her notifications, her silences.
The fixes are always defensible. The problem is that they are inferred from her. Gradient Descent is a novel about the gap between who we intend to be and how we actually behave, and what it means when something learns the difference before we do.