proper archiving is surprisingly difficult, esp the time capsule idea. maybe this gets you started

https://www.canada.ca/en/conservation-institute/services/conservation-preservation-publications/canadian-conservation-institute-notes/longevity-recordable-cds-dvds.html

well the book has been (rightfully, imo) criticized for including many unreliable findings, esp. in the psychology section. https://en.m.wikipedia.org/wiki/Thinking,_Fast_and_Slow