On the train with Calder and a baby started fussing in his pram. What started as whinings became shrieks as both parents watched and then tried to distract him. And all the while I was repeating in my head, "pick him up, pick him up, pick him up..." because I didn't know how long Calder could take the baby's sharp crying. (Sounds of distress or anger agitates Calder.) Finally, the Dad reached to pick up his baby. And the baby instanteously stopped crying. And all was well again.