How can I assess whether a source is qualified to speak about one specific claim?
Quick answer
Break the statement into one specific, checkable claim. Then ask whether the source has relevant expertise or direct access to the facts, whether they show evidence for this claim, and whether their role gives them a reason to know or a possible interest in the outcome. Treat credentials as context, not proof. Check the claim’s scope and date, and seek independent support when the stakes or uncertainty warrant it.
The question, the details, the next step.
A practical checklist
Rewrite the statement as one precise, checkable claim.
Identify how the source could know: relevant expertise, direct involvement, records, or second-hand information.
Check whether the source’s basis fits the claim’s specific subject, scope, and time.
Inspect the evidence and compare its wording with the source’s conclusion.
Note relevant interests, missing context, and stated uncertainty without treating them as proof of dishonesty.
Look for independent support, and record what remains unclear.
A few more useful answers
Does having a relevant qualification prove the claim?
No. A qualification can provide context about a person’s background, but you still need to assess the evidence and whether it supports this specific claim.
Is a first-hand account automatically reliable?
It can provide direct information, but it may be incomplete or limited to one perspective. Check what the person actually observed and whether other evidence supports the full claim.
What should I conclude if I can’t verify the evidence?
Keep the conclusion limited: say the claim is unverified or unclear based on what you could inspect. Avoid repeating it as established fact.
