Logical Fallacies

A formal fallacy is an error in the logical structure of an argument where the conclusion does not validly follow from the premises, regardless of the truth of those premises. These fallacies can be identified by examining the argument's form alone.

An informal fallacy is an error in reasoning that arises from the content, context, or language of an argument rather than from its logical structure. These fallacies require understanding what the argument is about to identify the flaw.

An ad hominem fallacy attacks the person making an argument rather than addressing the argument itself. By targeting the speaker's character, motives, or background, the attacker tries to discredit the claim without engaging with its content.

A straw man fallacy occurs when someone misrepresents or oversimplifies another person's argument, then attacks that distorted version instead of the original claim. This creates the illusion of having refuted the opponent.

A false dichotomy, also called a false dilemma, presents only two options as if they are the only possibilities when other alternatives exist. This fallacy pressures the audience into choosing between extremes.

An appeal to authority fallacy occurs when someone cites an authority figure as evidence for a claim, but the authority is not an expert in the relevant field, is biased, or their expertise alone is treated as conclusive proof.

A slippery slope fallacy argues that a single action will inevitably trigger a chain of increasingly extreme consequences, without providing evidence that each step in the chain is likely.

A hasty generalization draws a broad conclusion from a small, unrepresentative, or insufficient sample of evidence. This fallacy ignores the need for adequate data before making sweeping claims.