SSH 105 Lecture Notes - Lecture 2: Apple Pie, Dependent Clause, Critical Thinking

• School: Ryerson University
• Department: Social Sciences and Humanities
• Course: SSH 105
• Professor: David Hunter

Document Summary

Knowing how to construct and evaluate definitions is vital to critical thinking: We"ll study a definition method that can help. Let"s start with some basic facts about language. As we saw, knowledge is justified true belief. So they are not used to assert something: different sentences can be used to assert the same proposition, ex: john is a liar. To tell whether some proposition is asserted in a sentence, ask whether the sentence as a whole could be true even if that proposition were false. If the sentence is true when the propositions are false, then that proposition is not asserted. If the sentence is false when the propositions are false, then that proposition is asserted. A conjunction is a sentence with an and in it. Dundas is long: a conjunct is true only when both of its conjuncts are true, that is, if one of theme is false, then the entire conjunction is false too.