It was back to school today. My daughter woke up before I could quietly slip out. She cried, saying she wanted me to stay with her and not go far away. I told her I understood what she wanted, but that I had to go. "Mommy goes to work to earn money. Remember? We talked about this before." This is not an easy thing to explain to a not-yet-three-year-old. There is a lot that can't be said, like, "I wish I could stay home with you," because I'm certain she would think, "Then why don't you?" and we'd be back to where we started - a preschool lesson in economics.