Have you ever noticed something and wondered about it, only to later find out an entire study was done on the very subject?
For example, I worked with two boys who have autism back in 2001-2. They were both tall for their ages (the five-year-old was exactly a foot shorter than me!), and I occasionally saw a few other kids…who were also taller than their agemates. This made me wonder if there was a connection between autism and height.