My nephew (two years old in less than three weeks!) does this thing where he covers his eyes tightly when faced with something he deems unpleasant. At one time it was a person who half-chided him for doing something he wasn’t supposed to at a get-together. For the rest of the party, my sister said, every time Jacob came face to face with him he covered his eyes. More recently, it was a bowl of mixed fruit. He wanted only the papaya so he shut his eyes while he was being fed anything other than what he wanted….