In class assignment prep study Flashcards
complex propositions
uses logical words that makes the claim more special
what is a complex proposition made of
it is composed of multiple propositions but contains a relationship between the different propositions
Proposition
an expression making an assertion that something is the case or that something isnt a case
What are not considered propositions
-questions
- commands/imperatives
- exclamations
- greetings
what must all reasons contain
at least two propositions
- one proposition must express a reason or evidence
- the other must show/porve/demonstrate/give ground for what the speaker is arguing
What are the two different types of propositions
-premise
-conclusion
premise
a proposition(s) that is the reason or evidence for the conclusion
conclusion
the propostion that ties the premises together to prove what the overall goal the speaker is trying to prove is
how do you determine which proposition is a premise
use indicator words such as:
- since
- given that
- for/ for that reason
- because
-as/as a result of
how do you determine which proposition is the conclusion
use indicator words such as:
- So
-therefore
- thus
-as a result
- hence
- that’s why
- for this reason
- consquently
- this implies
- here’s why
How do you tell if the justification or the argument is good or properly convincing
- the premises must be true
- the reasonings should connect and the conclusion must be connected to the relationship between these premise connections
- (two questions that should be asked in this case is are the premises true? Would the conclusion follow if the premises are true?)
How do you check the truth of each premises
- relies on others to varify to validity of the statements (speacialists, etc.)
- can use your own back ground information and experiences
- can also use the socratic method to challenge individual claims
What is deductive justification
a form of argument structure that seeks to demonstrate a conclusion with garenteed certainty (the reasoning is intended tp guarantee the truth of the conclusion where the premise are true)
what are the two types of deductive justification
- valid: where the conclusion would have to be true if the premise were true
- invalid: where the conclusion would not have to be true if the premises were true
How do you determine if the conclusion is deductive
if words such as:
- it must be that
- it follows without a doubt
- necessarily
- certainly
- it can be deduced that
- definitely