Wikipedia's first sentence called it “american entrepreneur and philanthropist”. Today it says “american chemist”.
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.Pale dots: rewritten; the numbered note shows what it says now.Red text: written in or rewritten since the previous snapshot.1 tap a number or a side note to jump between them
The opening as it read in 2025
Arthur S. Obermayer (July 17, 1931 – January 10, 2016) was an American chemist, entrepreneur and philanthropist. After selling Moleculon Research Corporation in Cambridge, Mass., "which he founded in the 1960s, [he and his wife Judith] became influential philanthropists and activists for a variety of causes, from state politics, where the couple helped to elect the first Roman Catholic priest to the US House of Representatives, to entrepreneurship. In 2000, he co-founded the Obermayer German Jewish History Awards, "see how they might call attention to non-Jewish Germans’ work, affirming their mission while demonstrating to Jews abroad just how much had changed.... co-sponsored by JewishGen, a nonprofit resource for Jewish genealogy; the Berlin state parliament; LBI; and the Obermayer Foundation." (Ibid).
This is Wikipedia's own text, saved in our repository. Their copy of it is revision 1297202989.
The opening as it stood in 2020
Obermayer (July 17, 1931 – January 10, 2016) was an American entrepreneur and philanthropist. He was the founder and president of the Moleculon Research Corporation. He was a co-founder of Partners for Progressive Israel and the Obermayer German Jewish History Awards .
Red text was written in or rewritten since the previous snapshot. Their copy is revision 946356110.
The opening as it stood on October 6, 2023
American chemist and entrepreneur Arthur S.Obermayer (July 17, 1931 – January 10, 2016) was an American chemist, entrepreneur and philanthropist. He was the founder and president of the Moleculon Research Corporation. He was a co-founder of Partners for Progressive Israel and the Obermayer German Jewish History Awards .
Red text was written in or rewritten since the previous snapshot. Their copy is revision 1170449076.
Today
Wikipedia's first sentence called it “american entrepreneur and philanthropist”. Today it says “american chemist”. Read the current article and compare.
2020
Oct '23
2025
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 2020, and today's defining sentence is their current revision.
Then
american entrepreneur and philanthropist
Now
american chemist
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.
