Common Logical Errors to Avoid in Your Own Case
Before writing a case, you must learn to spot flaws in your own reasoning, not just an opponent's. You will be able to define and avoid equivocation and category errors in your own arguments.
Equivocation
Equivocation happens when a word shifts meaning midway through an argument, making the logic look valid when it is not. Saying 'Only rational beings have rights; animals act on instinct, not rationality, so animals have no rights' can equivocate on 'rational' if the first use means 'capable of any reasoning' and the second means 'capable of abstract moral reasoning.'
Category Errors
A category error treats something as belonging to a category it does not belong to, such as asking 'What color is the number seven?' In BQ, a common category error is treating an ethical claim as though it were a scientific fact that a lab could measure, or vice versa.
A debater writes: 'Science has proven the universe is deterministic. Morality requires freedom. Therefore, science has proven morality does not exist.'
This slides from a scientific claim about physical causation to a philosophical claim about moral responsibility without justifying the bridge — that move risks a category error, since 'proven by physics' and 'settled as a matter of ethics' are different kinds of claims that need a separate argument to connect.
1. Equivocation occurs when:
Answer all 1 to check.
Before delivering a case, audit it for equivocation and category errors, since these are the flaws experienced judges catch fastest.