Apresentação Quadro Negro

Racionalidade argumentativa

6. Falácias informais

5. Tipos de argumentos e falácias informais

3. Formas de inferência inválida

4. Principais falácias formais

2. O quadrado da oposição

1. Tese, verdade, argumento, validade e solidez

index

A verdade de uma tese — ou de qualquer proposição — é a característica de ela representar adequadamente as coisas como elas realmente são. Caso isso não aconteça, essa tese ou proposição é falsa.

VERDADE

Uma tese é uma resposta a um problema que está em aberto.

tese

Quando as premissas apoiam da maneira mais forte uma conclusão isso significa que não há maneira de a conclusão ser falsa caso todas as premissas sejam verdadeiras; ou seja, significa que as premissas implicam a conclusão ou, para falar ainda de outra maneira, significa que a conclusão se segue logicamente das premissas. Quando isto acontece diz-se também que a verdade das premissas garante a verdade da conclusão. E é isto que significa dizer que um argumento é válido.

validade

Argumento

Um argumento é um conjunto variável de proposições (ou afirmações) articuladas entre si, com o intuito de uma delas ser apoiada pelas outras.

O quadrado da oposição

formas de inferência válida

principais falácias formais

Lógica informal

Tipos de argumentos e falácias informais

vs

Falácias informais

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• Generate experiences with your content.
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Let the communication flow!

With Genially templates, you can include visual resources to wow your audience. You can also highlight a particular sentence or piece of information so that it sticks in your audience’s minds, or even embed external content to surprise them: Whatever you like!Do you need more reasons to create dynamic content? No problem! 90% of the information we assimilate is received through sight and, what’s more, we retain 42% more information when the content moves.

• Generate experiences with your content.
• It’s got the Wow effect. Very Wow.
• Make sure your audience remembers the message.