Evidence

One folder per topic, each a literature review in five steps. Every principle of the standard can be traced through them to what was measured, by whom, and what speaks against it.

The steps, the same in every topic

The steps of a review: frame, review, state of the art, position and baseline, with the evidence against gathered beside the review.
Graphviz source
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File Step
frame.md 1. the problem in one sentence, and what the field calls it: names, acronyms, synonyms
review.md 2. surveys first, then the seminal work, then forward citations, grouped by strand
state-of-the-art.md 3. who holds the record on each sub-question, by what method, measured how
position.md 4. what is known, what is not, and what this repository adds
against.md the evidence against: null results, controversies, failed replications
baseline.md 5. the named baseline the principles are compared against, and how

Every work cited is listed once, in the bibliography.

Topics

Topic The question
file-structure how to cut content into files and arrange files in folders
documentation what a repository's pages and code comments must carry
learning-science how text is structured so a reader learns and retains more
reading-order in what order, and to what depth, a reader should take linked material
psycholinguistics how density, locality and nesting in text cost the reader, from the word to the text tree
typography-and-layout how text is set and laid out on screen
llm-readers what changes when the reader, or the writer, is a language model

Grades

Each topic's README lists its claims with a grade, as defined in the standard.

Audit

Three audits checked claims against their primary sources on 2026-10-28, each by agents that had not written the lines they checked. The first took the 26 claims the principles lean on most. The second took every line of the evidence files that carries a number: 109 lines, of which 17 repeated a claim the first had settled. The third took the 411 lines the multivocal review added, in the evidence and in the principles.

Verdict First Second Third
correct 15 34 87
wrong (misattributed, a wrong value, a wrong link) 4 10 2
imprecise (right direction, narrower scope or other conditions) 5 40 46
unverifiable (the primary source could not be read) 2 8 22
research in the repository left uncited for a practice source 2
a change that broke the principle it changed 3

The audits corrected every line they found wrong, imprecise or self-breaking, or narrowed it to what the source supports, here and in the principles that repeat it. An unverifiable line was read again; if it still could not be read, it says "(secondary)" or "(not verified)", or was removed. The audits also fixed DOIs, titles and links in the bibliography. The audits did not cover claims without a number in the original reviews: such a claim is only as good as the review that cites it.

Multivocal review

On 2026-10-28 every topic was read again for what exists outside the academic literature: standards, company guides and practice, tools, practitioner books, communities and practitioner surveys. The method is the multivocal literature review (Garousi 2019). Eight agents searched eight strands and found about 240 sources, some read only in a summary.

The agents that merged them were asked to re-read each claim on its page; the third audit then checked 162 claims from the 411 lines added, and later passes read 26 works in full. A claim read only in a summary or an abstract says so.

The grey sources were then scored on the method's quality criteria (protocol); each topic's sources.md lists the scores. One scorer per topic, so the scores are a first pass, not an agreement.

Result Count
sources added to the bibliography 76
principles whose grade changed 0
principles given a new limit or caveat, each with its own grade 9
principles whose one-line claim changed 0 (one widening, on practice alone, was reverted by the audit)
principles whose limits, numbers or evidence changed 18
grey sources scored on the protocol's 20 criteria 125
scored below 10, so examples only, never support 40, of which 9 were not read at all and 8 only in part (an abstract, a record, a summary page)
  • No practice source raised a grade. Practice shows what is done; an outcome it reports is its owner's claim.
  • Overview first is not importance first. Putting the main fact first, as news does, has no tested support: two theses disagree, and the plain-language standard advises it as a convention.
  • Practice sets numbers without studies: sentence lengths, line lengths up to 90 characters, file-length limits.
  • 11 of the 31 checks that existed when the tools were searched had no counterpart, and 7 had one that does the same job; see checks.

Method

The steps follow a thesis literature review:

  • frame the problem in the field's words before searching;
  • read surveys first;
  • keep upper bounds (what has been achieved) apart from lower bounds (what is impossible);
  • stop only when the baseline can be named.