Rui Xu

AboutPosts
  • Six Things I Learned Watching a Robotics Startup Die from the InsideFebruary 10, 2026

    I spent a year as COO of a YC-backed robotics startup. The company didn't make it. Here's what I actually learned.

    RoboticsStartupHardwareStartup Lessons
  • AI Native Hardware: The Physical Layer of AI AgentsFebruary 10, 2026

    Stop building features. Start building physical primitives.

    AIHardwareAI Agents
  • The Last Tiger: Doomsday for Product ManagersFebruary 3, 2026

    This isn't a rebirth. It's a death rattle.

    AIProduct ManagementCareer
  • Silicon Valley's Superstition and Shenzhen's Dead EndNovember 25, 2025

    The bubble and truth of AI hardware.

    AIHardwareSilicon ValleyShenzhen
  • My Time at K-ScaleNovember 5, 2025

    Where a group of twenty-somethings (and one forty-year-old dad) tried to make a robot walk.

    RoboticsStartupStartup Lessons
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