The day’s deliveries came in a rusted van with a dented bumper and a driver who smelled of diesel and stories. He handed over a crate of chicks, each one a tiny fist of motion. As Mara signed the manifest, the terminal flagged a compatibility warning: MATCH: gene_pool/legacy_2022 → new_stock [CAUTION]. The code’s voice was clinical; its worry sounded like a librarian’s footfall. “Crossbreeding increases heterogeneity but raises long-term tracking complexity,” it suggested by way of caution.