A passing observation, a propos of nothing much:
Watching my two daughters playing together, I'm struck by the way they use the verb 'to pretend' in the imperative. It's not something you hear very often among adults.
"Pretend you're a kitten who's lost in the woods," one will command the other. "Okay, now. Pretend I'm a princess who has been invited to a ball! . . . "
Perhaps even more striking is the way in which the other child always takes this in stride, switching from lost kitten to robot to wizard to pastry chef without question or protest, and without missing a beat.