If you need an appendectomy, call a surgeon. But if you’re seeking a CEO for a surgical device company, an MD may not be your best choice.
To be sure, entrepreneurs in highly specialized and technical industries need the knowledge that only users (doctors, lawyers, engineers, and the like) can provide. Doctors understand what other doctors will value in a new product; lawyers know what other lawyers need. But you can have too much of a good thing — including input from such experts. In fact, my colleagues and I have found that innovation thrives when expert users make up about 40% of an invention team. Any less and the company will lose sight of what its customers need; any more and the group will tend to converge on old ideas.