Dead Internet Theory: A backup job can report success for months while recovery is already impossible, which is why restoration testing is part of preservation rather than an optional extra.
Dead Internet Theory: A file can still exist on a drive and still be lost in practice when silent corruption changes its contents, which is why checksums and independent copies matter.
Dead Internet Theory: A digital file can survive perfectly while losing the names, dates, authorship, and surrounding context needed to understand what it actually is.
Dead Internet Theory: A file that disappeared from the Web may still survive in old correspondence, where the attachment and the message around it preserve different parts of the historical record.
Dead Internet Theory: Before routine web archiving, companies and publishers sometimes froze websites onto CD-ROMs, leaving offline snapshots that can preserve pages a crawler never saw.
Dead Internet Theory: When the original page is gone, search snippets, quotations, citations, and copied fragments can preserve evidence that the missing source once said something specific.
Dead Internet Theory: An independent website can outlive its creator, but only if someone inherits the authority, credentials, payments, files, and instructions needed to keep it running.
Dead Internet Theory: When a platform announces a shutdown, volunteers may have only weeks or months to decide what to copy, how to crawl it, and what losses they have to accept.
Dead Internet Theory: A screenshot can preserve the visible appearance of a lost page, but without URLs, timestamps, surrounding pages, and provenance it is weak evidence about what the original actually was.
Dead Internet Theory: A missing archive capture proves that an archive lacks a usable copy, not that the page never existed or that it disappeared at a particular moment.