Some of the advice that we give our students particularly perhaps from venture capitalists, is that you need an exit strategy. What's your exit strategy, and I don't subscribe to that. I don't think you need an exit strategy. He ... it doesn't make sense. You're asking people to be passionate and to do something and they're going to be passionate about making something happen in the world, okay. It's not about cashing in. It's not about, okay here's the way we're going to do this and we'll do that and then we'll go public and then we'll... you know, we'll sell our stock and then we'll cash out. I think that this new group of social entrepreneurs is thinking more of doing this as a commitment to their lives. This is what their lives are about. It's not about cashing in and making money and what I tell them is and I think they sense this, if you do the right thing, the money will come. If you do the right thing, the money will come and you know, you may not make a billion dollars but you'll be really comfortable and you know... and do the right thing is the key issue here, is the key aim and you'll be successful.