Where the number came from.
Claims about learning, attention and behaviour circulate with a citation attached. Emberline follows the citation. Each filing traces a widely repeated statement backwards, one source at a time, and records what is at the end of the chain — a study, a misreading, or nothing at all.
Anatomy of a filing
The structure below is the same in every entry. It is a sequence, and the order carries the argument: each step is only meaningful because of what the step before it claimed.
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Step one
The claim as it circulates
Recorded in the form it typically appears, with a note on where it is repeated most.
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Step two
The citation given
Whatever source the claim is usually attributed to, identified precisely enough to be retrieved.
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Step three
What that source contains
Read in full. Frequently it cites something else, in which case the chain continues.
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Terminus
Where the chain ends
Marked when no further source can be located, or when the underlying research is reached and describes something other than the claim.
Filings — three published
The eight-second attention span
A figure repeated in marketing decks, conference talks and news coverage, generally attributed to a 2015 corporate report. The report attributes it elsewhere. The chain runs out before reaching any research.
Terminus — no source locatedTen thousand hours
This chain reaches a real and carefully conducted study. The number in the study is an average, not a threshold, and the researcher who produced it spent two decades publicly correcting the version that circulated.
Terminus — source located, claim altered in transitTwenty-one days to a habit
Traced to a 1960 book by a cosmetic surgeon describing how long patients took to adjust to a changed appearance. It was a clinical observation, not an experiment, and it was not about habits.
Terminus — source located, not a studyStandards
Four rules this desk works to
Nothing is assumed about the reader
Filings are written in the third person and concern documents, not people. Emberline holds no information about anyone who visits this site and makes no statement, direct or implied, about any reader's circumstances, abilities, health, work or personal history. A filing describes where a claim came from and nothing else.
Every step in a chain is named
Author, publication and year are given at each hop, so the same chain can be walked independently. Where a source could not be retrieved, that is stated rather than skipped.
The correction is printed with the claim
Where a researcher has publicly disputed how their work was described, the dispute appears in the filing. Where the underlying study is small, self-reported or otherwise limited, the limitation is stated in the same paragraph as the result.
No outcome is claimed
Emberline publishes editorial research about the provenance of statements. It does not present anything as a method, system, protocol, programme or sequence of steps that produces a result, and it makes no representation that reading it produces any effect.
Scope
What Emberline is not
Questions
About this publication
What does Emberline publish?
Provenance filings: written investigations that trace a widely repeated claim about learning, attention or behaviour back through its citation chain to whatever lies at the end of it. Each filing records the chain step by step and names every source retrieved along the way.
Is there any charge to read?
The filings on this site are open. No account, subscription or payment is required. Where a separate paid publication is offered, its price, contents and terms appear in full on its own order page before any purchase.
What is the refund policy?
Paid publications carry a 30-day refund window from the purchase date, requested by email with no explanation required. Full terms are on the refund page.
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No. There are no sessions, assessments, coaching calls, plans or one-to-one services of any kind, paid or unpaid. Correspondence is limited to editorial and administrative matters.
Why are there no testimonials?
Emberline publishes no testimonials, reviews, case studies, before-and-after accounts or reports of reader experience, on this site or in any advertising. A publication whose subject is the weakness of unsourced claims cannot coherently make unsourced claims of its own.
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Correspondence
One address
Editorial questions, source disputes, billing matters and privacy requests all reach the same desk. Replies are sent within two business days.
Detail on what to include is on the contact page.