Warren Buffett, the chairman and CEO of Berkshire Hathaway (BRK.A) (BRK.B) has built his reputation not only on investment performance, but also on his ability to explain business principles through plainspoken metaphors. One of his most enduring lessons for investors and managers alike was first captured in his 1989 letter to shareholders, “Good jockeys will do well on good horses, but not on broken-down nags.” The analogy illustrates Buffett’s central belief that while capable management is valuable, it ...