Identify common logical fallacies in arguments and revise a draft to replace fallacious reasoning with fair, logically sound support.
A logical fallacy is an error in reasoning that can make a bad argument sound persuasive, and learning to name them is as useful for evaluating what you read and hear as for improving your own writing. A straw man misrepresents an opponent's position to make it easier to knock down. An ad hominem attacks the person making an argument rather than the argument itself. A false dilemma presents only two options when more actually exist. A slippery slope claims one small step will inevitably lead to an extreme, unlikely outcome without justifying the chain of causation. A hasty generalization draws a broad conclusion from too little evidence.
Recognizing these patterns matters because they are common, not because they are always used dishonestly -- many writers commit them without noticing, especially under time pressure, when a reader's emotional reaction to a topic makes sloppy reasoning feel more solid than it is. Revising for fallacies is a specific, practical late-draft skill: reread your own argument looking specifically for a misrepresented opposing view, an attack on a person rather than a position, an implied "only two choices" where more exist, an unjustified leap to an extreme consequence, or a conclusion resting on too small a sample.
Mastery looks like: They can name and identify at least four common logical fallacies in sample arguments and can revise their own writing to replace fallacious reasoning with fair, logically sound support.
Common stumbles: Confusing a strongly emotional argument with a fallacious one, when emotion and sound logic can coexist; missing fallacies in their own writing while easily spotting them in others' arguments.
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