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Just learned for the first time that Blender can actually have negative physics cache! This is immensely helpful for each scene having normal physics from the start instead of starting from frame 1 and slowly turning the physics on from a set up bone position.

AZmaybe9

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30,281 views • 8 months ago •via X (Twitter)

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Elon Musk: We've designed Optimus from physics first principles. “We could not actually buy the actuators for any amount of money. They simply didn't exist. Even though there are 10,000-20,000 electric motors out there of various sizes and shapes, we've had to design every electric motor, gearbox and the controlling electronics from scratch, basically from physics first principles.” Interview at the All-In Summit, September 10, 2025

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