John Carmack considers fiber as an L2 cache for streaming AI data.

John Carmack has a habit of tossing out ideas that sit right on the edge between practical engineering and pure provocation. His latest musing lands squarely in that zone: what if a long loop of ...

The thought experiment began with a number. Single-mode fiber optics can now transmit data at 256 terabits per second over 200 kilometers. Based on that capacity, ...

A giant loop of fiber — some 200km — that'd mean no need for RAM ...