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5.5: Formal argument

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critical-thinking-audio-visual-icon The following presents what you essentially need to know about this topic.

Critical Thinking


5.5
Formal argument


Critical
Thinking


5.5
Formal
argument

Formal language: a rule-governed set of symbols.


Critical
Thinking


5.5
Formal
argument

Critique of formal arguments: begin at sentence level.


Critical
Thinking


5.5
Formal
argument

Sentences (propositions) can be presented in the form of truth tables.


Critical
Thinking


5.5
Formal
argument

Truth tables show whether or not a proposition is true based on variations in the combinations of words.


Critical
Thinking


5.5
Formal
argument

Truth tables can express natural language in formal language to represent truth possibilities of sentences.


Critical
Thinking


5.5
Formal
argument

Truth tables can help us think about how truth is presented in natural language.


Critical
Thinking


5.5
Formal
argument

Truth tables express negation (“not”), conjunction (“and”), disjunction (“or”) and condition (“if…then”).


Critical
Thinking


5.5
Formal
argument

Natural language can also be expressed in formal language.


Critical
Thinking


5.5
Formal
argument


Critical
Thinking


5.5
Formal
argument

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