Shoreshthe drift report · all case files
Case file

Islam by country

Wikipedia's first sentence called it “no exact mechanism in place anywhere around the world for counting religious denomination membership with preci”. Today it says “primarily due to relatively high birth rates and a youthful age structure”.
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 2005 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 2005

Statisticians typically derive their numbers by sampling a small group of people (a few thousands), calculating membership percentages and using those results to extrapolate an estimate for the whole population. This methodology is quite imprecise and often leads to great variances between count estimates. The percentage of Muslim population of each country was taken from the US State Department's International Religious Freedom Report 2004 [1] . In a few cases of conflicting estimates, the average of lowest and highest estimates was calculated.1

This is Wikipedia's own text, saved in our repository. Their copy of it is revision 17886745.
Today
Wikipedia's first sentence called it “no exact mechanism in place anywhere around the world for counting religious denomination membership with preci”. Today it says “primarily due to relatively high birth rates and a youthful age structure”. Read the current article and compare.
2005201020152020Oct '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 2005, and today's defining sentence is their current revision.

Then

no exact mechanism in place anywhere around the world for counting religious denomination membership with preci

Now

primarily due to relatively high birth rates and a youthful age structure

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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