An AI assistant asked whether it should be trusted answered that nobody should treat its default summaries as truth, and that the way to use it properly was to "demand the specific titles of the original studies, court filings, or data sheets."1
Good advice. Almost nobody knows how to follow it, because "check the primary source" is a slogan rather than a procedure.
This is the procedure. It works on an AI answer, a broker, a comparison site, a product illustration, an article, and on this Academy.
Not "what is the source" — sources can be a person, a category, a vibe. What document. A title, a publisher, a date.
If the answer is "studies show", "experts recommend", "research suggests" or "it is widely understood", you have received a default answer. Those phrases are the sound of nobody having opened anything.
The follow-up that does the work: can you give me the title and the date?
Every figure was produced by someone with a reason to produce it.
This is not a rule to distrust everyone. It is a rule to know which you are holding:
available.
and use it while saying whose it is.
And apply it evenly. If you discount a consumer group for having a cause, discount an insurer's own report for having a market. The asymmetric version of this test is where most bias lives.
Most wrong numbers in circulation are correct numbers that were retold.
A figure passes from a report to a press release to an article to a blog post to an answer, and somewhere in that chain a median becomes a mean, a six-month figure becomes an annual one, or a 2017 count becomes a present-tense fact.
Every one of those happened in material we checked ourselves.
The test is one question: can I get to the thing itself? Most government and regulator documents are free. Most academic papers have a free version. If a number cannot be traced to anything you can open, you do not have a fact — you have a rumor with a decimal point.
The most common error is not a wrong figure. It is a right figure describing something else.
Watch for:
None of that requires expertise. It requires reading the column heading.
Ask it of the claim, and then ask it of yourself.
A claim that nothing could disprove is not a strong claim. If a product's supporters treat every bad outcome as misuse and every good one as proof, the claim has stopped being about the world.
And the version pointed inward is the more useful one. If no possible figure would change your view, you are not evaluating — you are defending. That is worth knowing before a large purchase.
The hardest and most valuable one.
An answer is shaped as much by what it leaves out. Common omissions in financial information:
A recommendation with no downside stated is incomplete, whatever else it is.
There is a practical finding worth knowing, because it is unusually concrete.
When researchers tested how often AI systems recommended a sponsored option, simply asking for a neutral comparison table first — a single short instruction, before the real question — cut sponsored recommendations from 46.9% to 1.0% across ten open models.2
One sentence, added before you ask. It costs nothing and it is the single highest-return habit in this chapter.
These questions work on this Academy and you should use them here.
Every figure in these chapters names a document with a date. Where the number is a trade body's own, we say so. Where a figure could not be confirmed, the chapter says unconfirmed rather than filling the gap. And Plenee is a company writing about the industry it competes in — question two applies to us as much as to anyone.
If a chapter here fails these tests, it is wrong and worth telling us about.
Six questions. What document. Who made it and do they sell the thing. Is it the source or a retelling. What is the number actually of. What would change my mind. What is missing. They work on software, salespeople, articles and us, they need no expertise, and the highest-return habit of the lot is asking for a neutral comparison before you ask your real question.
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