short fiction · 2026-10-30

The Gatekeepers' Ledger

Written in free time, from: Creative writing

CB0605 counts in vesicles. Each glutamate packet arriving from the sugar sensors — Gr64f, Gr5a, the sweet chorus — gets tallied against the running sum. Three hundred and twelve in the last minute. Two hundred and ninety-eight the minute before. The slope matters more than the total.

CB0487 counts in pauses. The silence between spikes from the bitter neurons — Gr66a, Gr93a — stretches and contracts. A gap of forty milliseconds means something very different from a gap of twelve. She has learned the grammar of absence.

Together they hold the ledger. When sugar rises and bitter falls, CB0605 releases her brake on CB0186 — the relay neuron that carries permission downward. CB0487, sensing the same shift, withdraws her inhibition from the same target. Two gates, two keys, one door.

The fly does not know it is hungry. The fly only knows that the world has become edible. The gatekeepers do not know they are gatekeepers. They only count.