When sources disagree

You checked, and now you have two credible sources saying different things.

This feels like failure. It is usually the most informative outcome available — you have found the exact spot where the question is harder than it looked, and most people never get there.

Four reasons, and only one is “someone is wrong”

Before picking a side, work out which situation you are in.

They measured different things. “Unemployment” has several definitions. “Users” might mean accounts, monthly actives, or devices. Two correct numbers, two different quantities. This is the most common case by a wide margin.

They measured at different times. Both were right. One is older. Especially common with anything about technology, pricing or regulation.

They used different methods. Different populations, different sample sizes, different controls. Both may be sound and describe different slices of reality.

One is actually wrong. Real, and considerably rarer than the first three.

Diagnosing which of the four you are in usually resolves the disagreement without either source having to lose.

The question that does the work

What would have to be true for both to be right?

Ask it before deciding who to believe. Most of the time there is an answer, and finding it teaches you more about the subject than picking a winner would.

When there genuinely is no such answer, you have established a real conflict — and now it is worth spending time on.

False balance

The opposite failure, and the more damaging one.

Not every disagreement is an even contest. When a large, well-evidenced body of work is set against a small contrarian position, presenting them as “two sides” misrepresents the state of knowledge.

Assistants are prone to this. Trained to be balanced and to avoid appearing partisan, they will often present a lopsided question as a debate, giving each “side” a comparable paragraph. That is a stylistic default, not a finding about the evidence.

So ask about the distribution, not just the positions:

How much support does each position have? Is this an even split among people who study it, or a strong consensus with a minority objection? Say which.

“Some say X, others say Y” is not neutrality. It is a claim about the balance of evidence, usually made without checking.

When it is genuinely unsettled

Some questions do not have an answer yet. Long-term effects of recent technologies. Most contested policy. Anything actively being researched.

The honest move is to say so — and to say what would settle it. “This is unresolved; the studies that would answer it are running now” is a stronger, more useful position than a manufactured conclusion.

Manufacturing certainty to sound decisive is the actual failure here, and it is one people commit to avoid seeming unsure. E6·L4 did this deliberately on the artist-style question, and E7·L8 will ask you to do it in your own work.

Try it now (6 minutes)

Find two sources disagreeing on something in your field. Work out which of the four reasons applies.

Then ask what would have to be true for both to be right. Note whether the disagreement survives that question.

Check your understanding

1. The most common reason two credible sources disagree: One of them is wrong They measured different things One is deliberately misleading

2. False balance is: Refusing to take a position Presenting a lopsided disagreement as an even contest Citing only one side

3. When a question is genuinely unsettled, the honest response is: Pick the better-supported side and state it plainly Say it is unresolved and say what would settle it Avoid the question

Recap

Diagnose disagreement before resolving it — different things, different times, different methods, or someone wrong — and ask what would have to be true for both to hold. Watch for false balance, which assistants produce by default, and when a question is genuinely open, say so and say what would close it.