Case file
Abd al-Wajid
Wikipedia's first sentence called it “notable islamic astronomer who taught in the ottoman demirkapi madrasa”. Today it says “a 15th century astronomer”.
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Machine-checked against the full current article on 2026-08-03.
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The opening as it read in 2025
Abd al-Wājid (or Wāḥid ) ibn Muḥammad ibn Muḥammad al-Ḥanafī (Persian: عبدالواجب حنفی; died 1434) was a 15th century Persian astronomer . He was born in Mashhad , in modern Iran, and died in Kütahya , in modern Turkey, He taught in the Ottoman Demirkapi Madrasa, a school for astronomical observation and instruction. The Demirkapi madrasa was later renamed as the Wājidiyya Madrasa in his honour. Together with Qutb al-Din al-Shirazi , he brought the influence of the Maragheh observatory to Anatolia .
This is Wikipedia's own text, saved in our repository. Their copy of it is revision 1242145639.
Today
Wikipedia's first sentence called it “notable islamic astronomer who taught in the ottoman demirkapi madrasa”. Today it says “a 15th century astronomer”. Read the current article and compare.
| 2015 | 2020 | Oct '23 | 2025 |
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What Wikipedia says this is
Every article opens by defining its subject. This one was redefined since 2015, and today's defining sentence is their current revision.
Then
notable islamic astronomer who taught in the ottoman demirkapi madrasa
Now
a 15th century astronomer
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.