With one sweeping gesture, Dar Sleeper hoists the humanoid robot off the ground. Bracing its back with one arm and its legs with the other, he gently carries it across the room and lowers it onto a sofa, where it lies in repose as if catching a quick nap.

It’s a slightly surreal scene, but it has a serious point. I am visiting the Palo Alto headquarters of 1X Technologies, and Sleeper, the company’s VP of growth, is demonstrating that Neo, its home robot, is a lightweight at a mere 66 pounds. That’s a crucial design feature, given that a weighty domestic bot could prove hazardous if it toppled over in the vicinity of a human, a pet, or just a pricey vase.

Soon, Neo will take on the ultimate proving ground for a home robot: actual homes. 1X is announcing that it’s taking preorders and pla

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