Case file
Yosef Leifer
Wikipedia's first sentence called it “first rebbe and founder of the pittsburg”. Today it says “founder and first rebbe of the pittsburg hasidic dynasty in pittsburgh”.
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.
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The opening as it read in October 6, 2023
Yosef Leifer (1891 – 7 March 1966) was the founder and first Rebbe of the Pittsburg Hasidic dynasty in Pittsburgh, Pennsylvania , which he led for 42 years. Known as the Tzidkas Yosef after the name of his posthumously-published sefer , he was a scion of the Nadvorna dynasty.
This is Wikipedia's own text, saved in our repository. Their copy of it is revision 1169057427.
Today
Wikipedia's first sentence called it “first rebbe and founder of the pittsburg”. Today it says “founder and first rebbe of the pittsburg hasidic dynasty in pittsburgh”. 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
first rebbe and founder of the pittsburg
Now
founder and first rebbe of the pittsburg hasidic dynasty in pittsburgh
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.