Again, think of the real world. A person who speaks about one thing, and one thing only, is either incredibly dull or clinically insane. If you are passionate about your business, industry, products then share your passion. I was recently working on a project where I was told about a tech specialist who constantly improves the image quality of a camera lens. He could explain all the little details that go into creating a perfect image with such enthusiasm that you would be drawn into his world, and a topic you wouldn’t have guessed would be exciting– suddenly is.