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David Avnir

Wikipedia's first sentence called it “israeli professor of chemistry at hebrew university where he also got his education”. Today it says “israeli professor of chemistry at the institute of chemistry”.
Found by software in Wikipedia's own edit history. Not yet read by hand. The quoted words are Wikipedia's.
Compared with the live article on 2026-08-04.
We saved snapshots of this article over twenty years; you are reading the 2025 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 2025

Ottilien , Germany) is an Israeli Professor of chemistry at the Institute of Chemistry, The Hebrew University of Jerusalem . His scientific activities include sol-gel materials, molecularly doped metals, chirality and symmetry in experiments and theory. Earlier interests included fractals in chemistry and far-from-equilibrium phenomena. Current interests include also astrochemistry and geochemistry. He has authored and co-authored 420 papers (2025), many of which are highly cited, with an h-index of 87 and over 42,000 citations. Co-founder of the International Sol-Gel Society and its first chairman of the board. A "Highly Ranked Scholar - Lifetime" (in the top 0.05% of all scholars worldwide) according to the most recent (2024) ScholarGPS rankings.

This is Wikipedia's own text, saved in our repository. Their copy of it is revision 1297066067.
Today
Wikipedia's first sentence called it “israeli professor of chemistry at hebrew university where he also got his education”. Today it says “israeli professor of chemistry at the institute of chemistry”. Read the current article and compare.
20152020Oct '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 2015, and today's defining sentence is their current revision.

Then

israeli professor of chemistry at hebrew university where he also got his education

Now

israeli professor of chemistry at the institute of chemistry

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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