I use hypertext to help me think, to take me to unexpected places or to provide me with information that will clarify an idea. In that sense, I don't think of any single hypertext as enduring. I seldom revisit an individual page.
On the other hand, I suppose impressions of screens reside somewhere in my neural net and could emerge at any time. The problem is, of course, if and when these impressions emerge, they would not be "read" in the same way. Once we follow that line of reasoning, however, we end up at the point where endurance must be redefined.
I think one of the things I like about hypertext is that it has never pretended to endure. Transformation is a normal part of hypertext life.