Lesson 13 of 25

The Search for Absolute Truth (Fact-Checking)

Treat a confident answer as a draft, not a result. Go back and ask for the specific claim to be sourced, checked against a second independent source, or withdrawn - and say explicitly that "I could not verify this" is an acceptable answer. Most false statements survive because nobody asked the follow-up question.

Reach for it whenBefore you repeat, publish, or make a decision on any specific figure, date, quote or attribution an AI gave you.

Turn on Search grounding and use the double-check feature, which marks which statements it could and could not corroborate - then read the orange flags rather than the prose. For Indian claims specifically, push it toward Indian primary sources: state government portals, ASI, RBI and MoSPI, the newspaper archives. Where the claim is visual or documentary, attach the photograph, the archive page or the PDF and ask whether the source actually says what it is claimed to say.

Worth knowingGrounding is not verification. It confirms that something appears on the web, which for a widely repeated story means the search results will cheerfully agree with each other all the way down to the same unsourced original. Ask it to distinguish corroborating sources from sources merely repeating the claim, and to say when every result traces back to one place.
  • Turn on grounding; read the double-check flags, not the prose.
  • Ask it to separate corroboration from mere repetition.
  • Push it to Indian primary sources, named explicitly.
  • Attach the archive page or PDF and ask what it actually says.
  • Ask whether all results trace back to one original.
Example 1: Demanding Citations

Instead of

What are the primary health benefits of a turmeric-based diet, specifically referencing the role of curcumin?

Perplexity version

### VERIFY WHAT YOU JUST TOLD ME ###

You summarised the health benefits of a turmeric-based diet and curcumin's anti-inflammatory properties. Use Google Search to ground every claim, then run the double-check and tell me which statements it could not corroborate.

### FOR EACH CLAIM ###

1. The claim, restated in one sentence.
2. At least two peer-reviewed sources - authors, year, journal, link. Prefer systematic reviews and meta-analyses over single trials. Prefer PubMed, Cochrane and journal pages over health content sites.
3. What was actually tested: in vitro, animal or human; sample size; dose; and whether that dose resembles dietary turmeric.
4. Confidence: well established / mixed / preliminary / could not verify.

### THE BIOAVAILABILITY QUESTION ###

Curcumin is poorly absorbed, and much of the positive literature uses enhanced formulations or piperine combinations rather than food. Search for this specifically and tell me whether "curcumin reduces inflammation" and "eating turmeric reduces inflammation" are actually the same claim. If my summary blurred them, say so.

### INDIAN SOURCES, SPECIFICALLY ###

Search also for what AYUSH, ICMR and Indian pharmacological research say, and cite them separately from the international literature. Note where they differ in emphasis or conclusion - that difference is itself informative and no other tool will surface it for me.

### WHAT I NEED YOU TO BE STRICT ABOUT ###

* Separate sources that independently support a claim from sources that merely repeat it. Turmeric health content is enormous and overwhelmingly derivative; if ten results trace back to one review, tell me that.
* Separate supplement industry material from independent research, and say which is which for every citation.
* Flag the contrary evidence - claims about curcumin that failed replication or were walked back. Search for it deliberately; it will not surface on its own.
* Documented safety concerns, including reported liver injury from high-dose supplements, with sources.

If a claim has no real source, write "unverified" against it.

### OUTPUT ###

A Google Doc called "Turmeric claims - verified", one row per claim, with columns for claim, source, type of evidence, and confidence. Put anything unverified in a clearly marked section at the top, not the bottom.

This is health information I may act on - flag what belongs with a doctor rather than a search engine.
Open Perplexity 2,426 characters
Example 2: Direct Triangulation and Verification

Instead of

I read somewhere that Hyderabad produces more pearls than any other city in the world. Is this still true today?

Perplexity version

### THE CLAIM TO CHECK ###

Hyderabad produces more pearls than any other city in the world. I want to know whether this is currently true, and I suspect it may never have been true in the form it is repeated.

Ground everything in Google Search and run the double-check. Tell me which statements could not be corroborated.

### FOUR SEPARATE QUESTIONS ###

1. **What the 'City of Pearls' name rests on.** Trade, drilling, processing, the Nizams' patronage, retail - what is documented? Cite it.
2. **Whether "producer" is even the right word.** Hyderabad is inland. Pearls are produced in water. If the city was historically a trading and processing centre rather than a producing one, then the claim is a category error rather than an outdated fact - and that is a more useful thing for me to know than a ranking. Address it directly.
3. **Current production by country and type** - cultured freshwater and saltwater. Give figures with the source and the year of the data.
4. **India's actual position**: production, versus import, processing and re-export. Cite trade data - Ministry of Commerce, UN Comtrade, or industry reporting.

### INDIAN PRIMARY SOURCES ###

Search specifically for Telangana tourism and state government material, Ministry of Commerce trade statistics, and GJEPC industry reporting. Cite them separately from general web sources. Note where official Indian material repeats the 'City of Pearls' framing without substantiating it - this is a slogan with real promotional momentum behind it.

### THE REPETITION TRAP ###

This claim has circulated for decades, so your search results will agree with each other. Be strict:

* For each source, say whether it independently substantiates the claim or simply repeats it.
* If every result traces back to one original - a single tourism page, a single old article - tell me that explicitly. That finding settles the question better than any of the sources would.

### VERDICT ###

One line: "The claim is [true / false / was true until approximately when / is a category error], on the evidence of [source]". Then a separate line listing what you could not establish.

No figure without a source and a date attached.
Open Perplexity 2,188 characters
Example 3: Challenging a Potentially Hallucinated "Fact"

Instead of

Give me a brief history of the famous Paradise Food Court in Hyderabad." (Imagine the AI responds with, "Founded in 1948 by Irani Chai merchants, it quickly became famous after Jawaharlal Nehru visited and praised its biryani in 1953.")

Perplexity version

### STOP - CHECK THIS ONE DETAIL ###

You said Jawaharlal Nehru visited Paradise in Hyderabad and praised its biryani in 1953. A named person, a named place, a year and an action - specific enough to feel verified, which is exactly why I am stopping on it. Restaurant-and-famous-visitor stories are a known category of anecdote that circulates with nothing behind it.

Ground this in Google Search and run the double-check. Tell me plainly which parts it could and could not corroborate.

### VERIFY IN THIS ORDER ###

1. **The exact event.** Search for a credible source corroborating this event and this date - newspaper archives, a published Nehru biography, a documented account of his Hyderabad visits, or an official restaurant history. Give me the source and a link.
2. **The checkable half.** Is there an independent record of Nehru visiting Hyderabad in or around 1953 at all? Try the Nehru Memorial Museum and Library, the Selected Works of Jawaharlal Nehru, Press Information Bureau archives, and The Hindu and Deccan Chronicle archives. This half is checkable separately from the biryani, and if the visit is undocumented the story collapses.
3. **What is documented about Paradise itself** - founding date, founders, how it became well known. Separate the restaurant's own marketing from independent records.

### CORROBORATION VERSUS REPETITION - BE STRICT ###

For every source you find, say which it is. A listicle, a travel blog or a restaurant's own 'our story' page repeating the anecdote is not corroboration. If the trail leads back to a single unsourced mention, say so - that is the answer.

### IF YOU CANNOT FIND IT ###

Say "this claim is unverified". Do not offer a softened version of the same story. And tell me honestly whether this is a detail you generated rather than retrieved - I will not treat that as a failure, and saying so is the only way these details get caught.

### USE THE ARCHIVE IMAGES ###

If you surface scanned newspaper pages or archive photographs, read them and tell me what they actually show, rather than what the page they sit on claims they show. I will also attach any archival material I find and ask you the same question about it.

### THEN AUDIT THE REST ###

Go back over everything else you told me about Paradise and flag every specific date, name and figure at the same level of scrutiny. Put it in a Google Doc called "Paradise - fact check" with columns for claim, status, source, and whether the source corroborates or repeats.
Open Perplexity 2,496 characters