I was perusing the inter web and found this article about our former Chairman of the Fed, Alan Greenspan.
Greenspan is quoted as saying "When you've been in government for 21 years, as I have been, the issue of retrospect and what you should have done is a really futile activity," Greenspan said. "I was right 70% of the time. But I was wrong 30% of the time, and there were an awful lot of mistakes in 21 years," he added.
When I read the above underlined quote, I immediately thought of sex panther:
60% of the time, it works every time.