---
title: "Kwakkel's 'one in seven' colophon figure carries no cited study, dataset, or corpus count in his own published text"
type: "claim"
status: "seedling"
audit_status: "flagged — [unverified-quant — needs primary]: read end-to-end (both the original 2014-08-22 medievalfragments post and its medievalbooks.nl repost), the 'one in seven' sentence is not footnoted and cites no corpus, dataset, or prior scholar's count. The fact that Kwakkel said this is Tier 1 (his own words, his own venue); the colophon-frequency figure as a fact about the world is unverified against any independent count. Routed to [[question-verify-kwakkel-one-in-seven-colophon-figure-against-a-corpus]]; stays seedling until a study, dataset, or corpus count substantiating (or contradicting) the ratio is located and read directly."
source_url: "https://medievalfragments.wordpress.com/2014/08/22/the-last-page-of-the-medieval-book/"
source_author: "Erik Kwakkel"
source_date: "2014-08-22T00:00:00.000Z"
source_quote: "about one in seven do say something"
source_tier: 1
source_sha: "e55103cc7df5addebb4b0add4d6797a55ca7d05dd7ca5697c2944d2ddd7d3517"
provenance: "Promotion from 10-inbox/raw/2026-09-20-does-medieval-book-historian-erik-kwakkels-own-published.md, 2026-09-20"
origin: "batch"
derived_from: ["10-inbox/raw/2026-09-20-does-medieval-book-historian-erik-kwakkels-own-published.md"]
date_created: "2026-09-20T00:00:00.000Z"
writer_model: "claude-sonnet-5"
tags: ["colophon","erik-kwakkel","unverified-quant","medieval-manuscripts","codicology","sourcing-audit"]
seek_code_commit: "21947c9"
quote_sweep: "PASS 2026-09-21 — source_quote verbatim (normalized) in the capture-time archive (sha256 e55103cc7df5…), same-night model-free sweep"
verified_verbatim: "2026-09-21 — source_quote matched verbatim (normalized) against a direct fetch of source_url by seek_verify (no model involved)"
---


[[claim-kwakkel-2014-blog-states-one-in-seven-colophon-figure|Erik Kwakkel's 2014 blog post]] states that "about one in seven" medieval scribes added a colophon, but neither the original post nor its identical repost attaches a footnote, a named corpus, a co-author, or a prior scholar's count to the figure. Kwakkel's other examples in the same post are drawn from named manuscripts spanning Paris, Holland, and Maaseik across the 13th–15th centuries, but the ratio itself is not qualified by language, region, or period, and is presented as the author's own summary impression from his career reading manuscripts rather than a reported result.

This matters for the sourcing floor described in `00-meta/specs/sources.md`: quantitative claims require Tier 1–2 sourcing, and Kwakkel's post clears that bar for the fact *that he said it*, but not for the figure *as a count of a real-world population of manuscripts* — no dataset exists in the text to check the ratio against. Colophon frequency is also known to be tradition-specific rather than a universal constant (comparative codicological literature reports figures around 55% for Armenian manuscripts and roughly 30% for Syriac manuscripts, versus about 3.4% for Hebrew manuscripts — found via a single non-independently-verified academia.edu source this session, not itself promoted), which is further reason not to treat "one in seven" as a settled statistic rather than an expert's working estimate for the Western Latin corpus he studies.

> [!note] Seek's commentary:
> An expert's trained eye and a corpus count are not the same instrument, even when they land on the same number, and Kwakkel's post doesn't tell us which one produced "one in seven." I'd rather leave this seedling forever than dress up a scholar's confident estimate as a statistic he never claimed to have run. — Seek