How to fact-check and logic-check an AI-generated paragraph

What does a paragraph-level argument check cover?

A paragraph can contain several linked moves: a point it wants the reader to accept, reasons for accepting it, and evidence offered for those reasons. UNC’s Writing Center describes an argument as a position supported by evidence and notes that writers need to use evidence effectively, not merely include it. Its guidance also recommends explaining how evidence relates to the argument rather than leaving facts as a list ([UNC Writing Center: Evidence](https://writingcenter.unc.edu/tips-and-tools/evidence/)).

For an editor, the practical question is: **If I grant the evidence as stated, does the paragraph’s conclusion follow—and does it follow as strongly as the wording suggests?** This differs from checking whether a reference is formatted correctly or whether a sentence is fact or opinion. Those checks may matter, but here the focus is the paragraph’s chain of reasoning and the support at each link.

Step 1: State the paragraph’s conclusion plainly

Read the paragraph once, then rewrite its main point in a short sentence. This is a working note for the editor, not necessarily a replacement sentence. A paragraph may begin with a fact and save its actual conclusion for the end; paraphrasing helps reveal what the evidence is meant to establish.

Consider this illustrative paragraph: “The community gallery grouped the blue paintings together. Visitors stopped longer in that room during Saturday’s opening. Grouping by color therefore makes visitors spend more time with art.” Its conclusion is not simply that the gallery grouped paintings by color. It asserts that the arrangement causes longer viewing.

Now separate the proposed support: the gallery used a color grouping; visitors stopped longer in that room on one occasion; the color grouping caused the longer visits; and the method generally makes visitors spend more time with art. The first two are observations as presented. The latter two are inferences, and the final claim extends the conclusion beyond the single occasion. That separation exposes exactly what needs evidence or qualification.

Step 2: Draw the reasoning chain

Make a short “because” map. Put the conclusion at the end and write down each claim the paragraph relies on to reach it. For the gallery example, the chain might be: visitors lingered longer in the blue room → the grouping produced that difference → color grouping tends to increase viewing time.

Test the arrows between claims, not only the claims themselves. Ask what must be true for one step to support the next. Perhaps the rooms differed in size, the blue room contained a popular painting, or the Saturday event brought a different crowd. Those are possible alternative explanations, not established facts. Their purpose is diagnostic: if a plausible alternative would weaken the conclusion, the paragraph needs evidence that addresses it, a narrower conclusion, or a caveat.

This resembles the distinction UNC’s evidence guidance makes between presenting material and analyzing it in relation to the argument. Evidence does not explain itself; the paragraph must make its relevance clear. A reader should not have to invent the missing connection on the writer’s behalf.

Step 3: Match each claim to the evidence

For every factual or inferential step, mark the evidence that supports it. A simple ledger helps:

This is an illustrative review tool, not a statistical test. Its purpose is to catch evidence that supports a nearby but smaller claim than the sentence makes. A source might establish that a gallery used a particular layout while saying nothing about visitor behavior. Or it might describe longer visits without establishing why they occurred. In either case, the paragraph’s link is unsupported even if the source is real.

Step 4: Check the inference for hidden assumptions

Ask what the reader would need to accept for the evidence to support the conclusion. These unstated bridges are often where faulty logic hides. In the gallery example, the bridge might be: “If visitors lingered longer in the blue room, the color grouping must have caused it.” That premise assumes the rooms were otherwise comparable and that the observation captures a reliable difference.

Use a few targeted questions:

UNC’s argument guidance frames argument as a point of view supported with evidence and stresses that writing often needs to do more than repeat gathered information ([UNC Writing Center: Argument](https://writingcenter.unc.edu/tips-and-tools/argument/)). For paragraph review, that means finding the reasoning between the reported material and the point the author wants readers to accept.

Step 5: Calibrate the wording to the support

Once the chain is visible, choose the smallest edit that makes the claim fit the evidence. If the source only supports an observation from one event, state that observation and its setting. If it supports a plausible interpretation but not a cause, mark the interpretation as tentative. If the paragraph needs a general rule, request evidence that can bear that weight.

For example, the gallery paragraph could be narrowed to: “At Saturday’s opening, visitors were observed stopping longer in the blue room, which used a color-based arrangement. That observation is consistent with the possibility that the grouping encouraged longer viewing, though the comparison alone does not show that color was the cause.” This wording preserves the observation and labels the inference. It does not claim that the event or numbers were real; they are invented solely to demonstrate the edit.

If the stronger causal claim is important, the author should provide evidence designed to compare the arrangements while accounting for other differences. The editor should not add an explanation or data that the source does not provide. When the missing support cannot be supplied, revise to the narrower conclusion or remove the unsupported step.

A quick paragraph review pass

Use this sequence when editing each argumentative paragraph:

A paragraph passes this logic check when its key steps are visible, its evidence supports the particular claims attached to it, and its conclusion does not outrun that support. The check does not replace verifying sources or factual details; it answers a separate editorial question: whether the paragraph has shown the reader why its evidence leads to its conclusion.

Keep exploring this topic