Last year I met my four-month-old nephew, Landon, for the first time. During the weekend I spent visiting him in San Diego, my inner science nerd often got the best of me. I would find myself probing my nephew’s foot reflexes and offering unsolicited explanations for why his toes curled this way or that, only to be met by my wife’s disapproving looks and the new parents’ blank stares. Soon enough I dropped the shoptalk in favor of baby talk.