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Logic is designed to avoid faulty reasoning. Sound reasoning is a necessary, but not sufficient, condition for making correct decisions. There are different types of reasoning: deduction, induction, analogy, abduction. Only the former are studied here. They are studied: propositions, connectives, contradictions, tautologies, reasoning and fallacies. As for semiotics, the topics to be discussed are: The types of signs, Dimensions of semiotics: syntactic, semantics, pragmatics, Uses of language, Paradoxes.
For all this, we have summarized the essentials of "Notions of propositional and semiotic logic", by Javier Flax.