Band-aid's

This morning Zachary got a little scratch on his leg and asked for a band-aid to make it better. I told him it wasn't bleeding so a band-aid wasn't going to help the scratch feel better. The boys LOVE band-aids and are always trying to find a way to sport one. We probably have about 4 or 5 different boxes of them, all with different themes. So, a few hours later, Zachary gets an actual cut on his foot. He asks again for a band-aid to help it feel better. I took him upstairs and asked him which one he wanted, placed it on his foot and like magic, he felt much better! What is it about band-aids that hold such healing power for a child?? And I wish they still worked that way on adults!