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"This page intentionally left blank" has a 500-year history [1]

['Ellsworth Toohey']

Date: 2026-02-01  

You've seen it in exam booklets, government forms, and technical manuals: a page that says "This page intentionally left blank." But the moment those words appear, the page is no longer blank. It's a small paradox, like a Cretan declaring all Cretans to be liars.

Wikipedia has an entire article on this, and the explanations are more practical than philosophical. Printing requires pages to be grouped into signatures — folded sheets of 8, 16, or 32 pages. If your content doesn't fill them exactly, you get blanks. Chapters traditionally start on odd-numbered pages, which can leave the previous even page empty. The label tells readers nothing is missing.

Standardized tests use blank pages between sections so no one can see through the paper to the next set of questions. Sheet music arranges pieces to minimize page turns, with blanks filling gaps. Military documents mark every page — including blanks — so inventories come out right, and nobody thinks a classified page went missing.

The practice dates to the earliest days of printing, when so-called "vacat pages" reassured readers that the printer hadn't made an error. The U.S. Code of Federal Regulations (1984 edition) actually mandated that blank pages in certain publications be marked as such.

Some writers have had fun with the convention. Andy Griffiths' 1999 book Just Stupid! features a cartoon snail saying, "This page would be blank if I were not here telling you that this page would be blank if I were not here." Demetri Martin's This Is a Book inverts it: "This page unintentionally left blank."

Previously:

• Review of pages intentionally left blank

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