Separate Claims, Evidence, and Inferences

Name the statement being evaluated

A claim is something someone asks you to accept. Evidence is information offered in support. An inference is the reasoning that links the information to the claim. These parts can blur together when an explanation sounds fluent or agrees with what you already believe.

Choose a small everyday argument to inspect. “This café must be the best because there is a queue” is manageable. The queue is an observation; “best” is a broad judgment; the connection assumes that a queue mainly reflects quality. Making those roles visible opens space for a more careful conclusion.

List what is actually known

Write the evidence without adding an explanation. How long was the queue? At what time? Were nearby cafés open? If you do not know, mark it as unknown. A useful analysis does not require inventing missing information.

Next, write the proposed inference in one sentence. “People queue for higher-quality coffee” might be relevant, but there are alternatives: limited staff, a promotion, or a convenient location. Listing alternatives does not prove the original claim false. It shows why the evidence may support less than the claim suggests.

Ask what would distinguish the alternatives

Choose a check that could matter. You might compare reviews about coffee quality, visit at a different time, or simply try a drink if the stakes are low. Avoid collecting information that cannot change the decision.

Research on considering an opposite possibility has found reductions in some judgment biases in experimental settings. Here, the practical use is modest: give a competing explanation enough detail that you can see what evidence would separate it from your first interpretation.

Scale effort to the decision

You do not need an evidence chart for every café visit. Save the fuller process for claims that affect important choices or repeatedly cause confusion. A quick version is often enough: “What is the claim, what supports it, and what else could explain that?”

Finish with a proportionate conclusion. “The queue suggests popularity, but I do not yet know whether I will like the coffee” fits the available evidence. Careful reasoning is often a change in confidence or wording, rather than a dramatic reversal of belief.

Try the same exercise on a claim you initially dislike. Apply the same standard for missing context and alternative explanations. Consistency is easier to inspect when you write the two analyses side by side.

Sources & further reading

• Lord and colleagues: Considering the opposite ↗