Dear Oliver,

I just scarfed down tuna with a side of kibble. That’s how I get the energy I need to investigate your questions.

To do that, I talked with Ming Luo. He’s a robotics scientist at Washington State University.

He told me that robots don’t eat like we do.

“A human has a digestive system,” Luo said. “That’s how food can be converted to energy. But a robot can’t do that. The robot can just take in energy directly.”

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