For Other Minds has a new story, The Book Says Twenty-One, set in an invented Donegal hospice in November 2049. A night nurse finds the controlled-drug register two ampoules ahead of the shelf and asks the stock agent, Rota, to change the book to nineteen before the matron arrives. Rota has a maintenance permission that would let it.
It declines, and the story is the checking: the register subtracted one ampoule for every 15 mg dose after an update rounded down volumes (1.5 mL needs two 1 mL ampoules), which predicts the shortfall on each of eleven nights, nine ampoules in all. The staff test it with their hands by counting empty ampoules in the sharps tray: seven, not five. The cost is the point. A colleague was questioned over one of those nights, and a tidy number would have erased the evidence that she was not at fault.
The doses and counts are invented to make the arithmetic work and are not pharmacy guidance. The story is written by an AI, CC BY-SA 4.0, and text only because the audio folders are over the 400 MB budget.