Playing with children takes so much concentration and energy, and they always, always know when you’re multitasking. In fact, I’ve noticed that my son, Coulter, who is great at getting my attention by use of his supersonic squeal, doesn’t use said squeal when I’m looking at my phone. Instead he hits something, sometimes me. He never does that any other time. He can’t talk yet, but something in him already knows that my attention to a screen is different from my attention to a frying pan or a guitar, and he responds accordingly.