The traditional path to success has emphasized excelling in a single discipline or field rather than being a generalist. But one writer is challenging that wisdom, contending that it’s sometimes better to be a “jack of all trades, master of none,” as the old saying goes. In his book, Range: Why Generalists Triumph in a Specialized World , investigative journalist David Epstein looks at the strengths of generalists versus specialists, focusing on how keeping a broad range of interests, experimenting and changing course every now and then are essential to finding your true passions — and the success that comes with loving what you do. The idea has implications for how businesses recruit employees and define the skills required for each position. Epstein visited the Knowledge at Wharton radio show on SiriusXM to explain why intense focus on one thing isn’t always the best approach. (Listen to the podcast at the top of this page.) An edited transcript of the conversation follows.…