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Types of evidence

What each kind of proof actually establishes, how long it survives, and where to find it.

Google Docs version historyA chronological record of the document being built up over time, with timestamps and named editors, stored on Google's servers.Word document metadataEditing minutes accumulated while the file was open, the number of save generations, and revision-save IDs that mark distinct…Keystroke and writing-session recordsThat a human typed this text, at human speed, over real elapsed time, and that the words were not swapped afterwards.Drafts, notes and correspondenceThat the ideas and the work existed before the finished document did.Git and commit historyA timestamped, attributable record of text being built incrementally, with diffs showing exactly what changed and when.Notion, Confluence and wiki historyPage-level edit history with timestamps and author attribution, showing a document assembled over time.Email drafts and sent threadsThat text existed at a particular time, in a system with independent timestamps.Witnesses and collaboratorsThat somebody else observed the work being made.

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