Is There a Difference Between Lead Generation and Qualifying?

The PI personal injury attorneys are really interesting to me because you have two things happening. You've got billboards and TV ads everywhere, it seems like they are eager to talk to any possible person who could present an opportunity for the firm. On the other hand, you balance that with the fact that they are never going to take a case on that they don't think they can win. So there's this wide open invitation and then there's all of these questions that narrow down in their own self interest. There's something about that model I want to learn more about.