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Case file

Bibliomancy

Wikipedia's first sentence called it “form of divination that seeks to know the future by randomly selecting a passage from a book”. Today it says “use of books in divination”.
Measured, not asserted. Every count, date and revision on this page was taken from Wikipedia's own history and checked against the live article. The words quoted are theirs.
Machine-checked against the full current article on 2026-08-03.
We saved snapshots of this article over twenty years; you are reading the 2005 one. Red dashes: removed from Wikipedia since. Pale dots: rewritten; the numbered note shows what it says now. 1 tap a number or a side note to jump between them
The opening as it read in 2005

Bibliomancy is a form of divination that seeks to know the future by randomly selecting a passage from a book , frequently a sacred text . The most common procedure involves placing the book on its spine, and with eyes closed, allowing the book to fall open to a random page. Then, with the eyes still closed place a finger on the open page and read the passage indicated. Among Christians, the Bible is most commonly used, and in Moslem cultures the Qur'an . In the middle ages the use of Virgil 's Aeneid was common in Europe . Because book owners frequently have favorite passages that the books open themselves to, some practitioners use dice or another randomiser to choose the page to be opened. This practice was formalised by the use of coins or yarrow stalks in consulting the I Ching . Tarot is also a form of bibliomancy, the main difference that the pages (cards) are unbound. Another variant requires the selection of a random book from a library before selecting the random passage from that book. This also holds if a book has fallen down from a shelf on its own. Bibliomancy is another term for Stichomancy, which means "divination from lines." Some sources refer to bibliomancy as a specialised form of stichomancy, since they think that the "biblio" in bibliomancy refers to the Bible rather than understanding that it refers to books in general.1

This is Wikipedia's own text, saved in our repository. Their copy of it is revision 16379318.
Today
Wikipedia's first sentence called it “form of divination that seeks to know the future by randomly selecting a passage from a book”. Today it says “use of books in divination”. Read the current article and compare.
2005201020152020Oct '232025
Counts in the opening at each snapshot. Green: the word gained ground. Red: it was cut. Grey: no change.

What Wikipedia says this is

Every article opens by defining its subject. This one was redefined since 2005, and today's defining sentence is their current revision.

Then

form of divination that seeks to know the future by randomly selecting a passage from a book

Now

use of books in divination

Struck red text is no longer in the article; dotted amber text was rewritten. Every revision id links to Wikipedia's copy; the text shown is our own saved copy. Data: /data. Wikipedia text is CC BY-SA; quoted for the record; not affiliated with Wikipedia.

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