Print it out on acid-free paper with a stable, acid-free ink. Have it bound as a hardback, and seal it into a waterproof container. Entrust it to one of your children, tell them to keep it in a safe-deposit box and take it out once a year to share with their children, and to pass it on to their children with the same instructions. If you have it electronically, the absolute best case in 500 years is that it will be a…
I see no technical reason for why we can't create some e-reader that will keep your library much safer for much longer than paper. I see no reason why we can't make some that last for a millennium, if the power supply and storage aren't included and it's kept off in some dry place, out of the Sun's light and never overheat. But well, there is no demand for tech that will last for a millennium. In fact, people are pus…
Microengravings on metal plates [1] will be more durable than electronics could ever be, and easier to read as well. No power source necessary — just a lens.