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Case file

Tertullian

Wikipedia's first sentence called it “church leader and prolific author during the early years of christianity”. Today it says “prolific early christian author from carthage in the roman province of africa”. The one-line description Wikipedia serves to search engines and AI systems read “Catholic Church portal Philosophy portal”. It now reads “Roman Christian theologian and writer (c. 155 – c. 220)”.
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

Tertullianus , anglicized as Tertullian , ( ca. 155 – 230 ) was a church leader and prolific author during the early years of Christianity . He was born, lived, and died in Carthage , in what is today Tunisia . Tertullian is a controversial individual within the history of the church. On one hand, he was the first great writer of Latin Christianity, known as the "Father of the Western Church". Tertullian was the theologian who introduced the term trinity (L. trinitas ) to the Christian vocabulary . On the other hand, he left the orthodox catholic Church late in his life and joined the heterodox Montanists , a movement considered by many to have been a cult , and was thus never declared a saint by any surviving Christian church.1

This is Wikipedia's own text, saved in our repository. Their copy of it is revision 15927445.
Today
Wikipedia's first sentence called it “church leader and prolific author during the early years of christianity”. Today it says “prolific early christian author from carthage in the roman province of africa”. The one-line description Wikipedia serves to search engines and AI systems read “Catholic Church portal Philosophy portal”. It now reads “Roman Christian theologian and writer (c. 155 – c. 220)”. 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

church leader and prolific author during the early years of christianity

Now

prolific early christian author from carthage in the roman province of africa

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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