It suggests that in this virtual world, you can turn back and try a different route without any loss. Maybe this is adding a temporal quality to our existing spatial notions of virtual reality. A hot list in a web browser already does this to some degree, but it only takes you directly to your desired site. Maybe what's needed is a richer experience. A way of remembering your browsing choices, why you made the decisions you did, what were the consequences, did you see anything else along the way.
People already know about recording life experiences they care about.
You can take photos from a trip and re-live the moments somewhat. But maybe the things I touched on along the way are worth remembering for myself. Nathan has a path, Gitta has a path and Pete has a path. We can look at our pasts and see the thread of our lives, what decisions we made and why, what were the alternatives to those decisions. This could be kind of fun if it weren't too involved.