Principles of Clarity Used by Great Communicators
Great communicators use simple words, concrete examples, clear structure, and remove unnecessary complexity to ensure their message is understood.
What was corrected
The article stated that 'A 1978 study published in Psychological Review tested these predictions against reader behavior: subjects given structurally clear texts showed 35-40% better recall at one week than subjects given scrambled or poorly connected versions of the same content.' It described a plain-language field experiment in which two versions of a Veterans Administration benefits letter were tested with '500 recipients randomly assigned', reporting 'a 40% higher rate of correctly completed benefit applications and a 60% reduction in follow-up telephone inquiries', published in 'a 2011 government report'. It stated that the SEC 'tested comprehension of plain-English prospectuses against original versions with 600 investors' and that 'Comprehension of key terms and conditions improved by an average of 27 percentage points', with investors identifying risk factors 'at twice the rate'. It said learners given worked examples 'solved subsequent transfer problems in 30% less time', replicated across 'mathematics, science, chess, and writing instruction'. It called the Simons and Chabris experiment 'the neural basis for Principle 4'. It said Thiokol engineers 'failed to state their conclusion explicitly at the outset' and that Tufte concluded the data 'unambiguously supported' postponement. It quoted Bezos as saying 'The clarity of a good memo forces the author to construct a coherent argument' without a source, said Amazon 'banned PowerPoint', claimed 'When Wikipedia redesigned its article structure around 2010', called reconstruction 'the most reliable test' of clarity, and asserted receivers 'must process everything at equal priority'. Its summary table listed the principles as explicit structure, dependency-aware sequencing, concrete grounding, calibrated detail and feedback orientation, while its sections were explicit structure, dependency-aware sequencing, constraint preservation, relevance signaling and shared reference grounding, and the FAQ listed a third set.
The Kintsch and van Dijk passage now describes their 1978 work accurately as an influential model of how readers build coherent mental representations from propositions and discourse structure, and the bibliography cites the 1978 Psychological Review paper directly rather than the 1983 book. The VA and SEC experiments were removed entirely and replaced with the documented policy record: the federal plain-language programme and Plain Writing Act of 2010, and the SEC's 1998 adoption of plain-English requirements for prospectus cover pages, summaries and risk factors, with an explicit statement that no controlled comprehension percentages are being claimed. The Sweller and Cooper description now reports less instructional time and faster, less error-prone performance on structurally similar problems, notes the advantage was less clear for structurally different problems, and adds the expertise-reversal finding with a Kalyuga et al. 2001 citation. The invisible-gorilla passage is now framed as an analogy and 'neural basis' is gone. The Challenger section states that Thiokol engineers recommended against launching below 53F and were overruled, that Tufte's chart analysis has itself been debated, and that presentation was one contributor within a wider failure involving management pressure, normalisation of prior anomalies, data uncertainty and organizational authority. The unsourced Bezos quotation, the PowerPoint ban claim and the 2010 Wikipedia redesign were removed, the latter replaced with the current Manual of Style lead-section requirement. The checklist passage now describes the actual components of the WHO Surgical Safety Checklist instead of retrofitting it to the article's own model. One five-principle framework, lead with purpose and main point, sequence prerequisite ideas, ground abstractions concretely, preserve important conditions and verify understanding, is now used identically in the table, the section headings and the FAQ, and is labeled a WhenNotesFly synthesis; 'communicative generosity' is labeled editorial terminology. Exceptions were added for conclusion-first and principle-before-example sequencing, superlatives and universal attention claims were softened, unused references were replaced with claim-level sources, and length went from about 3,630 to about 2,600 words.
Suggested change
Removed the fabricated Kintsch recall statistics and replaced them with an accurate description of the 1978 model, citing the correct paper. Removed the unverifiable VA and SEC experiments, replacing them with the documented policy facts, namely the Plain Writing Act of 2010 and the SEC's 1998 plain-English disclosure requirements, and stated explicitly that no controlled comprehension percentages are being claimed. Corrected the Sweller and Cooper description to what the study found and added the expertise-reversal limitation with a Kalyuga et al. citation. Rewrote the invisible-gorilla passage as an explicit analogy and removed 'neural basis'. Corrected the Challenger account to note that Thiokol engineers recommended against launching below 53F, that Tufte's chart analysis has itself been debated, and that presentation was one contributor within a wider organizational failure. Replaced the unsourced Bezos quotation and the 2010 Wikipedia claim with the current Manual of Style requirement, and replaced the retrofitted checklist passage with the actual components of the WHO Surgical Safety Checklist. Unified the two conflicting five-principle lists into one framework used identically in the table, the section headings, and the FAQ, labeled it a WhenNotesFly synthesis, and labeled 'communicative generosity' as editorial terminology. Added exceptions to the conclusion-first and principle-before-example advice, softened universal claims about attention and academic language, replaced unused references with claim-level sources, and reduced the article from about 3,630 to about 2,600 words.
Why this is better
A claim-level review found three quantified research results that could not be traced to the cited or official sources, one of them attached to a real paper that contains no such experiment, plus a behavioural psychology study described as a neural finding and a case study whose central assertion reversed the documented history. The article also ran three different versions of its own five-principle framework in the table, the section headings and the FAQ, which is a substantive defect in a page about clarity. Corrections remove the unverifiable statistics, bound each retained finding to what its source establishes, correct the Challenger and Wikipedia accounts, and unify the framework so the page follows the advice it gives.
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