As a small I child I ate an old piece of gum from under a bus seat. I'd really like to exchange my mouth for a new one.
Madness string 93294
Turns out, recorded knowledge doesn't stay forever and the majority gets buried and lost in only a few decades. Books go out of publication and are lost and thrown away over time, websites with images and important data get shut down and deleted, artworks are destroyed and burned, and most ancient forms of knowledge are recorded on perishable mediums that have since decomposed.