Joe Kelly stands in front of a room of professionals. Some in the audience are schoolteachers, while others are therapists or physicians.
He selects a man and a woman from the audience to join him on the stand. Looking at each of them, he says, "OK, pretend each of you are 22 years old and have decided to get married and have children. You have a completely egalitarian marriage, so you're going to share the rearing of your children equally."