CNN's John Sutter says he used to look for businesses that had high margins, high returns as a sign of a quote good business. He is now looking for something different and his father was just hospitalized for a while because he had a joint infection. So the bacteria are very hard to get out of the body once they're there. They spread. I'm not a doctor but I learned more about medicine I ever wanted to learn. The most profitable businesses often present a target for competition. There are companies like show in Williams that does paints that doesn't look as if it's particularly profitable but it's quietly growing perhaps even like a bacteria.