Quest2ReasonClimb the mountain, sharpen your mind.

Lesson · 4 min Steady

Weighing the Report

In one line Ibn Khaldun told historians to test reports against what is possible, not just against who told them.

Ibn Khaldun was impatient with the historians before him. Many, he said, copied reports because they trusted the person who passed them on, without asking whether the event could have happened as told.

He listed sources of error: partisanship for a side, too much trust in transmitters, not grasping what the reporter intended, flattering the powerful, and above all ignorance of how societies work. His example was an older historian’s report that the Israelites in the wilderness fielded an army of 600,000. Given the size of the land and the few generations since their ancestors arrived in Egypt, he argued, the figure was impossible.

His method was to check a report against the nature of society. The question is not only who said it, but whether it could be so.

Go deeper

Islamic scholars had long judged reports by their chains of transmitters, a method developed for sayings of the Prophet. Ibn Khaldun did not reject it, but argued that for reports about events, checking whether the event fits the nature of things should come first. Later historians have praised the Muqaddimah as an early work of social science and historical criticism.

The viral crowd

Illustration: The viral crowd

A post claims that two million people attended a protest in a town square. It is shared thousands of times by people who trust the account that posted it.

A reader checks the size of the square. Even packed tightly, it could hold a small fraction of that. Without knowing anything else about the event, she can tell the number is wrong.

Try this today Next time you hear a striking number, ask whether it is even possible given what you know about the situation.

Question 1 of 2

Many earlier historians copied reports because they trusted the person who passed them on.

What did Ibn Khaldun add?

Question 2 of 2

An older historian reported that the Israelites fielded an army of 600,000.

How did Ibn Khaldun judge the figure?

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Quest2Reason. “Weighing the Report.” https://quest2reason.com/learn/lesson/weighing-the-report. Accessed 13 November 2026.

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