Case file
Leo Picard
Wikipedia's first sentence called it “israeli geologist and an expert in the field of hydrology”. Today it says “israeli geologist and an expert in the field of hydrogeology”.
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 2015
Leo Picard , also known as Yehudah Leo Picard ( , born 3 June 1900, died 4 April 1997), was an Israeli geologist and an expert in the field of hydrogeology .1 Leo Picard inspects a new water drill in Ein Hemed ,near Jerusalem (~1964)2
This is Wikipedia's own text, saved in our repository. Their copy of it is revision 659481880.
Today
Wikipedia's first sentence called it “israeli geologist and an expert in the field of hydrology”. Today it says “israeli geologist and an expert in the field of hydrogeology”. 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
israeli geologist and an expert in the field of hydrology
Now
israeli geologist and an expert in the field of hydrogeology
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.