Logical fallacies are errors in logic that make a conclusion or premise invalid, unsound, or irrelevant. These fallacies may be based on false assumptions, faulty evidence, emotional appeals, or distorted reasoning. Examples of these fallacies include ad hominem which involves attacking the person instead of the argument, appeal to authority which uses an expert's opinion as the only proof of a claim, appeal to emotion which manipulates the emotions of the audience instead of providing rational reasons, bandwagon which assumes something is true or good because many people believe it, false dilemma which presents only two options when there are more possibilities, hasty generalization which makes a sweeping statement based on insufficient or biased data, post hoc which assumes one event causes another because they occur in sequence, red herring which introduces an irrelevant or distracting topic to divert attention from the main issue, slippery slope which claims a small step will inevitably lead to a disastrous outcome, and straw man which misrepresents or exaggerates an opponent's position to make it easier to refute.