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Elias, a digital archivist for the National Library, found it buried in a corrupted 2004 backup from a defunct meteorological station in the Pyrenees. Most of the data was junk, but this one image remained uncorrupted.

The file was only 12 kilobytes—a tiny, pixelated square titled A55D98C_thumbs.jpg . A55D98C_thumbs.jpg

In the photo, Elias was standing in his own office, but his shadow was pointing toward the desk lamp, and his arm was raised, caught in a wave he didn't remember making. Elias, a digital archivist for the National Library,