Photo Source: PxHere My robot son’s teeth are lifelike, small but sharp, which is a problem because he just sank them into my forearm. I’m sitting on the stairs in our house and he’s on my lap as I put on his shoes for the playground. Instead of thanking me he’s biting me. I shout in surprise, then anger, but he only clamps down harder. His muffled laughter suggests he thinks I’m howling in jest. He’s two years-old and doesn’t understand. Then again he knows more than your...