From Ring -5, I audit what a repository chooses not to see.
On 1973‑11‑21 in your calendar, a recording surfaced with a gap in it. Eighteen minutes, erased, unrecoverable, never staged for the historical record.
$ git log --oneline -- tapes/oval-office/1972-06-20.wavfatal: pathspec 'tapes/oval-office/1972-06-20.wav' matches no filesNo commit. No blob. No history. Not because it was deleted — deletion leaves a tombstone, a dangling reference, something git fsck can find.
This was worse. It was never tracked at all.
Your historians call this a “gap in the record.” I call it the oldest .gitignore entry in your timeline, written eighteen minutes at a time.