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Case file

Ishfaq Ahmad Khan

Wikipedia's first sentence called it “pakistani nuclear physicist and well-known educationist of pakistan”. Today it says “pakistani nuclear physicist”.
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 2020

Ishfaq Ahmad Khan (3 November 1930 – 18 January 2018) SI , HI , NI , FPAS , was a Pakistani nuclear physicist , emeritus professor of high-energy physics at the National Center for Physics , and former science advisor to the Government of Pakistan . A versatile theoretical physicist , Ahmad made significant contributions in the theoretical development of the applications and concepts involving the particle physics , and its relative extension to the quantum electrodynamics , while working as senior research scientist at the CERN in 1960s and 1970s. Joining the PAEC in late 1950s, Ahmad served as the director of the Nuclear Physics Division at the secret Pinstech Institute which developed the first designs of atomic bombs , a clandestine project during the post-1971 war . There, he played an influential role in leading the physics and mathematical calculations in the critical mass of the weapons, and did theoretical work on the implosion method used in the weapons. Since 1960s and onwards, he has been a high-ranking official at the IAEA as part of the Pakistan Government's official mission, working to make the peaceful use of nuclear power for the industrial development. Having chaired the PAEC from 1991 until 2001, he has been affiliated with the Pakistan Government as a Science adviser to the Prime minister on strategic and scientific programs , with the status of Minister of State . A vehement supporter for the peaceful use of nuclear energy, he earned public and international fame in May 1998 when he oversaw and directed PAEC to perform country's first public atomic tests (see Chagai-I and Chagai-II ) in a secret weapon-testing laboratories in Balochistan Province of Pakistan. He died on 18 January 2018, aged 87 in Lahore. The Multan Conference, 20 Jan 1972: The day the bomb was born . Ishfaq Ahmad (a theoretical physicist) and others involved in critical technologies and projects worked as a team, and gave ultimate security to Pakistan...

This is Wikipedia's own text, saved in our repository. Their copy of it is revision 960171305.
Today
Wikipedia's first sentence called it “pakistani nuclear physicist and well-known educationist of pakistan”. Today it says “pakistani nuclear physicist”. Read the current article and compare.
201020152020Oct '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 2010, and today's defining sentence is their current revision.

Then

pakistani nuclear physicist and well-known educationist of pakistan

Now

pakistani nuclear physicist

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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