In 1944 Borges published a four-page story about a man named Ryan, who, in attempting to write the biography of his great-grandfather Fergus Kilpatrick — an Irish revolutionary executed at a Dublin theatre in 1824, instantly canonised as martyr — discovers a sequence of impossible coincidences. The anonymous letter that warned Kilpatrick of his own assassination is copied, almost line for line, from a letter to Julius Caesar in Shakespeare's play. Kilpatrick's last words echo Caesar's. The funeral resembles Antony's oration. Eventually Ryan understands. Kilpatrick was a traitor; his comrades, when they exposed him, decided to stage his death using Shakespeare as a script, so that the Irish cause would not be wounded. Ryan, descended from a traitor whose murder was a play, decides to publish the lie.
The waveforms above are the mathematical signature of that decision. Two timelines, two centuries, drawn as continuous signals; everywhere except at five locked instants they wander into different shapes. At those five instants they peak together — not by chance, but because someone made them. Phase-locking is the formal fingerprint of a copy. If two signals are uncorrelated everywhere except at a handful of identical maxima, then someone, somewhere, has spliced the same word into both their scores. Coincidence has a smooth statistical shape; conspiracy has sharp ones. The peaks above are sharp.
Borges' suggestion, half-serious and half-horrified, is that history may have been doing this for a very long time. Gauchos who recite the Iliad, generals who restage Pharsalus, riots whose chants are quoted from the Aeneid — what if the imitation is not metaphor but installation? What if the men who run history have been reading the same plays as the men who write it, and have decided, in private, to make the second performance louder than the first? The shape of every revolution, on this reading, is the shape of an earlier play someone admired enough to forge.
Ryan publishes the lie. He has no choice; the lie has been authored too well. And we are left watching the two centuries breathe in time. If you type any phrase into the oracle, it will appear as a third locked instant on both lines — a third "coincidence" you yourself have just authored. The piece does not ask whether history has plagiarized literature. It asks, more disquietingly, whether the difference still means anything. If every important moment rhymes with an earlier important moment, then we are not living forward. We are reading. The author has merely changed costumes.