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The Single Source Problem

By Barasa Wekesa · 2 August 2026 · 5 min read
Notebook and audio recorder on a table

Sooner or later, most independent reporters end up with a story that hinges on one person's account and nothing else. It might be a whistleblower inside a county office, a resident describing something only they witnessed, or a former employee willing to talk but not to be recorded. The instinct is often to either drop the story or run it as though the single account were fully proven. Neither response is quite right.

A single source isn't automatically a weak source. What matters is what you do around that account, and how honestly you describe its status to the reader. The problem isn't having one voice — it's treating one voice as though it were three.

Corroborate the parts you can, separately

Even when the central claim can't be independently confirmed, pieces around it often can. If a source describes a meeting, you may be able to confirm the meeting happened, even without confirming what was said in it. If they describe a document, you may be able to confirm the document exists, even without seeing its contents. Building this kind of partial corroboration doesn't prove the central claim, but it tells you — and eventually the reader — how much weight the account can reasonably carry.

  • Check what can be confirmed independently, even if the core claim can't be
  • Ask the source directly why they're willing to talk, and note the answer
  • Give the accused party a genuine chance to respond before publication

Let the sourcing show in the writing

The other half of the method is in how the finished piece is worded. A sentence that says "according to one former employee" reads very differently from one that states a fact plainly, and readers pick up on that difference even when they can't articulate it. Being precise about sourcing in the text itself isn't a weakness in the writing — it's what lets a reader trust the parts of the story that are more firmly established.

This is also, frankly, a matter of protecting yourself. A story that's honest about its own limits is far easier to stand behind later than one that quietly overstates what it actually knows.

Working through a difficult sourcing situation?

Fact Verification Support is built around exactly this kind of judgment call, applied to your own draft.

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