When my five year old daughter asked me about gravitational pulls on the moon, I quickly retorted, "Great question. Let's google that " Instead of agreeing, my five year old said, "That's ok, Mom, I'll just ask Dad. He's smarter and he'll know." I nearly wrecked the car. "Why is Dad smarter?" "He has an office, a briefcase and goes to WORK," she answered. So, this book is born out of the...