when i look at a book with pictures, the illustration of a doctor makes me think of medicine, like a story that can slip by if you blink! before medicine gets to go to sleep forever, it has this pre-expiration date, like a bedtime, so it can be safe for people. my mom says it's important for our personal health. and if we ever get a little sick, medicine can help us begin afresh, just like planting a new flower in spring!