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Logical reasoning

For logical reasoning, Lumi fixes the memorisable part, the logic rules, the question types and the classic traps.

How to turn this subject into cards

What you can learn by heart is the basic rules, such as the contrapositive, the negation of a universal statement, common fallacies and the question types of a test. Make one note per rule or trap, with a short example. Lumi asks them back so that you recognise them fast.

Example card

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Logical reasoning · teach this card to Lumi

The contrapositive of if A then B is if not B then not A. Affirming the consequent is a fallacy, because B being true does not prove A. In a necessary assumption question, the answer must be required for the argument to work. A syllogism has two premises and one conclusion.

Lumi’s question

The _____ of if A then B is if not B then not A.

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Give Lumi your logical reasoning notes, it gives them back as questions at the right moment.

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