Case file
Yechiel Perr
Wikipedia's first sentence called it “american orthodox rabbi and the rosh yeshiva of yeshiva of far rockaway in far rockaway”. Today it says “american rabbi”. The one-line description Wikipedia serves to search engines and AI systems read “American-born rabbi (born 1935) Rabbi”. It now reads “American rabbi (1935–2024)”.
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 2025 one. Red dashes: removed from Wikipedia since.
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The opening as it read in 2025
Yechiel Yitzchok Perr (1935 – May 3, 2024) was an American rabbi. He was the founder and rosh yeshiva of Yeshiva Derech Ayson ( Yeshiva of Far Rockaway ) in Far Rockaway , New York .
This is Wikipedia's own text, saved in our repository. Their copy of it is revision 1282202250.
Today
Wikipedia's first sentence called it “american orthodox rabbi and the rosh yeshiva of yeshiva of far rockaway in far rockaway”. Today it says “american rabbi”. The one-line description Wikipedia serves to search engines and AI systems read “American-born rabbi (born 1935) Rabbi”. It now reads “American rabbi (1935–2024)”. Read the current article and compare.
| 2010 | 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 2010, and today's defining sentence is their current revision.
Then
american orthodox rabbi and the rosh yeshiva of yeshiva of far rockaway in far rockaway
Now
american rabbi
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.