In the case of a tutorial, it might be "good intentions." I have about two dozen tutorials bookmarked, and I really do want to do them some day. And I do some of them...but I'm always bookmarking more. Shade, Vue, Poser, Anim8or, Photoshop...I can't keep up. But I keep gathering tutorials anyway. I might find time to do them all one day. At the very least, when I need to do something in particular, I know where I can find the right tutorial.