text:  Results may vary. Hey Dad, how do you throw a curveball? How do you build a fort? How do refrigerators run? How do fish learn how to swim? Kids ask a lot of questions. How high can you jump? But you don't have to know every answer. How many phone numbers are there? Because you don't have to be perfect to be a perfect parent. How do cell phones work? There are thousands of children in foster care who don't need every question answered.