One requires medical attention, the other does not. A normal parent doesn't know which is which, and chances are if a bone isn't sticking out waiting until the next day isn't going to make a big difference.
From the article:
It's literally the exact same story as my personal experience, and you're asking what the relevance is because one turned out to be broken and one turned out to be sprained. Derp.The father of five offered a personal example of how this shift might play out. He says his youngest son fell and injured his arm. Not sure if it was sprained or broken, he and his wife decided to wait until the next morning to take the 10-year-old to the doctor's office, instead of going to the emergency room that night.