The promise of a robotic lawn mower has always been an appealing one. Set it loose in the garden to get on with the job, and reclaim a chunk of your weekend in the process. That idea has been around ...

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Tesla CEO Elon Musk believes lidar is a "fool's errand." A former Tesla engineer, Eric Aguilar, cofounded an entire company to perfect it. His bet: all robots — whether vehicular or humanoid — will ...