“How do we know we're not people in a movie?' she asked.I looked at her not knowing how to reply.Mama, [...] how do we know that things are real?'Great. Now we have a junior existentialist in the house.Well, we don't know. We just have to hope that what we think is real is real.'But how do we know?' she asked, insistently.Ah, a scientist, who wants empirical evidence.We don't know. We just have to hope.'Mama, how do we know things aren't a dream? You know, how sometimes life feels like a dream? Do you ever feel that way?'Yes, sweetie, I feel that way all the time.”