That’s a good question and I think I’m not entirely sure. I think it’s only in the last few years that the discussion on this has really gotten serious. When I started doing science in physics, we used to talk about whether or not we were going to be able to find intelligent life out there, and it was assumed the universe was created for no purpose. It was assumed humans were the only intelligent life forms that had ever existed in the universe, and the universe was created by God. Then it was thought that we would eventually find intelligence out there and the only reason for us to care is because it may help us learn more about our place in the universe.But now in many respects I think we’ve seen that this assumption is completely wrong, and we’re going to be getting closer and closer to one of the things that we’re all trying to say is: What does it mean to be intelligent?