Philosophical study of systematic thinking
Logic
From the greek word logos
Reason/reasoning
Study of human reasoning
Logic
What is the direct object of logic?
Spoken or written arguments
Audible or tangible manifestation of reasoning or thinking
Argument
A system of claims or statements, one which is meant to be supported by other claims.
Argument
What are the two requisites of an argument?
What are the two parts of an argument?
Premise and conclusion
What is the single process of an argument?
Inference
The claim that is meant to be supported by other claims
Conclusion
The claim that is used as supporting reason for the conclusion
Premise/s
Inference
A judgement expressed in sentence
Propositions
A sentence pronouncing agreement/disagreement between terms
Propositions
It is a statement/claim about a subject matter
Propositions
TRUE OR FALSE: we evaluate the truth-value of a claim or proposition
True
TRUE OR FALSE: we evaluate the validity of a claim and we dont evaluate the validity of an argument.
FALSE: we don’t evaluate the validity of a claim and we evaluate the validity of an argument.
What is the basis of truth and falsehood?
Reality
What are the two types of proposition?
Expresses a direct assertion of the agreement/disagreement
Categorical
Direct claim
Categorical
What are the FOUR elements of Categorical Proposition?
Expresses a relation between two judgements in which the truth of one depends on the other
Hypothetical
If-then statements
Conditional