Brazilian surgeon operates on a patient 12,034 km away with 199 ms latency
aakashgupta · x · 2026-07-24
A Brazilian surgeon performed a teleoperation on a patient in Kuwait from 12,034 km away with an average latency of 199 ms.
- The post explains why the result is notable: light alone needs about 120 ms for the round trip over the 24,000 km fiber loop, so the remaining budget for routers, switches, and encoding is tiny.
- It also notes a human-factors threshold: below roughly 200 ms, the brain can still treat robot arms like its own hands; above 300 ms, surgeons start compensating consciously, and around 700 ms error rates become dangerous.
- The record matters because the network was operating close to the theoretical latency floor imposed by physics.
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