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Scientists built an AI chip that runs on light instead of electricity. And it could make every GPU on the planet obsolete. Right now, the entire AI industry is bottlenecked by a fundamental law of physics. Moving electrons through silicon generates friction. Friction generates heat. Heat requires massive cooling systems and billions of dollars in power grids. We are literally running out of electricity to train bigger models. Researchers at the University of Sydney just published a paper in Nature that bypasses this problem entirely. They built a processor that runs on photons instead of electrons. It processes data using light. Instead of pushing electrical currents through copper wires, this chip guides light waves through microscopic channels. Light has no electrical resistance. It generates almost zero heat. And it moves at the literal speed of light. But here is the craziest part. You can't run two electrical currents through the same wire at the exact same time without them interfering. But you can send multiple different colors of light through the exact same optical channel simultaneously. It unlocks massive, instant parallel processing. This isn't an incremental upgrade. It represents a reality where AI models process data millions of times faster, using a fraction of the energy. The global compute bottleneck won't be solved by building more nuclear power plants to cool giant server farms. It will be solved by abandoning electricity entirely.