I think that everybody likes quick gratification, but I think that when people really go through a scientific training, like doing a doctoral thesis, you learn at that time — or really through any kind of research — that science moves slowly.  It just can’t help but do that. So I think that the instant gratification issue may, in certain cases — though I’m certainly not any expert on this — could discourage people at a younger age.  But if you’ve gone through the kind of scientific training — like doing research, or certainly doing a Ph.D. — I think then you clearly learn that that’s something you live with, that that’s just the way it is.  In fact that’s part of the value of a Ph.D. It teaches you how to do research, kind of what science is all about.  But it may be somewhat discipline-dependent.  I think more about biology and chemical engineering and chemistry, but maybe there are areas like computer science where it’s a little bit different, because you could do different things.  But certainly in the areas that I’m most familiar with, I think when you go through this whole doctoral program, you learn that that’s just the nature of things.