I had to have blood drawn at the doctor's office, and my five-year-old daughter, Mary, came along. When the nurse held up the needle, Mary never blinked. When she inserted the needle into my arm, Mary watched with interest. As the blood began to flow, my daughter acted as if she'd seen this a million times. Finally Mary winced on my behalf when the nurse, the procedure over, reached into her pocket and pulled out something my daughter did associate with pain: a Band-Aid.