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Repair common Windows errors and clear accumulated junk for a smoother, more stable PC - no reinstall needed.Free scan · no reinstallA citation is a route to evidence, not proof that a claim is true. To check whether an answer is grounded, open the cited source, locate the passage behind each important claim, and test whether that passage supports the claim in full—including its details, qualifications, and date. For uncertain or consequential claims, verify against an appropriate original or independent source.
What it means for a claim to be grounded
A claim is grounded when the cited evidence supports it as written. A source may confirm a person’s name or a general point without supporting the claim’s date, number, cause, or other details. Google Cloud’s grounding guidance describes the standard as full entailment: a partially supported statement is not considered grounded (Google Cloud’s grounding guidance).
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That distinction matters because a citation can look plausible while supporting only part of a sentence—or a nearby sentence rather than the whole paragraph. OpenAI cautions that search results and citations can be incomplete, outdated, or incorrect, and recommends opening sources to check their support, date, and authority (OpenAI Help Center: Searching with ChatGPT). TUM makes the broader point: grounding and citations make checking easier, but neither guarantees correctness (AI Literacy @ TUM).
How to check an answer claim by claim
- Separate the answer into factual claims. Treat a sentence containing several facts as several checks: a name, date, quantity, comparison, and explanation may not all have the same support.
- Open the cited source. Do not rely on a link label, search snippet, or the fact that a citation is clickable. Find the relevant passage and read enough surrounding context to understand what it says.
- Compare the passage with the complete claim. Check names, dates, quantities, scope, qualifiers, and causal language. If the passage supports only part of the statement, the full statement is not established by that citation.
- Assess whether the source is fit for this claim. Consider its accuracy, authority, motivation, and relevance. The House of Commons Library recommends these recurring checks and suggests consulting another source when uncertain (House of Commons Library: How to evaluate sources).
- Check the date when the fact can change. Look for the source’s publication or update date and ask whether it is recent enough for the particular claim. There is no single freshness cutoff that works for every topic.
- Verify important or disputed claims elsewhere. Look for an appropriate original document, official statistic, dataset, or other direct evidence. A second source is most useful when it is independent rather than simply repeating the same report.
How to judge the source, not just the citation
A source can accurately support a claim yet still be a poor authority for it. A page repeating a statistic may help you trace it, but the original dataset or official publication is generally more direct evidence. For a legal claim, primary legislation may be more useful than a summary; for a numerical claim, check the underlying statistics and how they were produced where available. The House of Commons Library’s guidance on working with AI also recommends independent verification using reputable original sources, such as official statistics and primary legislation (House of Commons Library: Working with AI and spotting AI-generated text).
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When sources disagree, compare them on the dimensions that matter to the claim:
- Authority: Is the publisher in a position to know or establish this fact?
- Directness: Is it original evidence, or a summary of someone else’s work?
- Accuracy and method: Does it explain where the information came from and how it was established?
- Relevance: Does it address the exact population, place, time period, and question in the answer?
- Date: Was it published or updated recently enough for a changing fact?
- Independence: Do other sources provide separate confirmation, or are they all repeating one source?
These checks are more useful than assigning sources an arbitrary numerical score. A source may be authoritative for one kind of claim and irrelevant for another.
What citation problems should prompt extra checking?
Watch for a missing or dead link, a source that does not contain the claimed evidence, a passage that supports only a neighboring detail, or a quotation that cannot be found in the cited material. Treat these as reasons to verify further—not as evidence that the claim is true or false by themselves.
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Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.A quick verification checklist
- Can you open the source and find the passage relevant to the claim?
- Does that passage support every material detail, not merely the general topic?
- Is the source authoritative and directly relevant for this specific claim?
- Is its publication or update date suitable for a fact that may have changed?
- For a consequential or uncertain claim, can an original or independent source confirm it?
Google Search Help also describes reliability signals that can help when evaluating results, but such signals are starting points rather than substitutes for checking the evidence itself (Google Search Help: Reliable results on Search).
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