@worldmodels.io: Elon Musk just admitted the hardest thing Tesla has ever tried to build isn't a car. This week, on a call with investors, Musk said Optimus has around 10,000 unique parts, and none of them came with an existing supply chain. "This is going to be the hardest product to scale manufacturing that we've ever made at Tesla, because everything on the robot is new," he said. Here's the part getting less attention: before Optimus's body ever attempts a task on a factory floor, its AI already rehearsed the job inside a simulated video world, what Tesla calls "digital dreams." The software learned to work long before the hardware could be built at scale. That gap between simulated skill and physical manufacturing might be the real story of humanoid robots in 2026. 📲 Follow @worldmodels.io for more behind-the-scenes robotics builds from the frontier of machines that learn to move. #worldmodels #optimus #teslaai #humanoidrobots #physicalai

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Sunday 26 July 2026 22:12:36 GMT