A Catalog of Common Fallacies in BQ Rounds
Certain logical fallacies appear repeatedly in BQ rounds on philosophical resolutions, and naming them precisely in a speech is persuasive to judges. You will be able to identify and name at least four common fallacies.
Appeal to Popularity and Appeal to Nature
Appeal to popularity argues a claim is true because many people believe it ('most cultures believe in some god, so a god probably exists'), which ignores that widespread belief does not establish truth. Appeal to nature argues something is good or true because it is 'natural' ('humans naturally compete, so competition is morally good'), which ignores that natural processes (disease, predation) are not automatically good.
False Dilemma and Slippery Slope
A false dilemma presents only two options when more exist ('either morality is completely objective or completely arbitrary, with nothing in between'), ignoring middle positions like partial objectivity. A slippery slope claims one step inevitably leads to an extreme outcome without justifying each intermediate step ('if we say AI could ever be conscious, next we'll have to give robots the right to vote'), skipping over the actual argument needed at each stage.
A Negative debater on 'Resolved: Animals have moral status' argues: 'If we grant moral status to animals, next we'll have to grant it to plants, then to rocks, and society will collapse.'
The Affirmative responds: 'This is a slippery slope fallacy — my opponent hasn't shown why granting status based on the capacity to suffer, which plants and rocks lack, would extend any further than animals. Each step in their chain needs its own argument, and they haven't given one.'
1. Arguing 'most people believe X, so X is probably true' commits which fallacy?
Answer all 1 to check.
Learn to name appeals to popularity and nature, false dilemmas, and slippery slopes precisely when you hear them in-round.