A bearing begins to sing.
On the hot-strip line, bearing 4B changes its note — a harmonic no human ear would catch. The vibration sensor hears it. The only question is who it can tell, and how fast.
The nearest cloud region is 1,400 km away. Round trip through it: 142 ms — on a good night, if the WAN holds. The window to act before the bearing scores the shaft: about 9 ms.
The decision never leaves the building. Twelve meters from the line, a sealed NAVAXON cabinet runs the plant's vibration model. Detection to actuation: 4 ms. The line eases, the alert fires, and bearing 4B survives to meet the morning shift.
By sunrise, the night's waveforms have retrained the model — and not one frame, not one signature, has left the perimeter. The auditor's question has a one-line answer: nothing crossed the fence.
Your body already works this way. Touch a flame, and the spine acts before the brain is told. Biology moved its critical decisions to the edge four hundred million years ago. Industry is doing it now.
