> Instead, take a plate made of platinum or iridium No no no no no! Archival data should never be made on intrinsically valuable material; doing so makes it s

> Instead, take a plate made of platinum or iridium No no no no no! Archival data should never be made on intrinsically valuable material; doing so makes it subject to theft or re-use for something "better". Example: There is a reason why more marble statues survive from antiquity than bronze statues.... Bronze has an intrinsic value (theft) and future artists would also melt down existing bronze statues to make something "better".