This all just points out how hard it is to preserve anything over a long period of time. We think of the things in our lives as being permanent because they mos

This all just points out how hard it is to preserve anything over a long period of time. We think of the things in our lives as being permanent because they mostly last for a good portion of our lifetime but once property or information changes hands all of the tacit knowledge about it is lost. The next generation doesn’t see that notebook as important so it is just as likely to end up in the trash as in a box in storage. Even if they do try to preserve it there are many ways it can be destroyed or degrade or simply be lost. Even the seemingly simple thought experiment of “deliver a one sentence message to a person living at your current address 500 years from now” is nearly impossible using ordinary means available to an individual.