Logical Flashcards
Justification
Aim to convince people of your oponion
Explanation
Aim to show why something happens
Argument
connected series of sentences, statements or propositions, that are intended to give reasons of some kind.
Logic
The study of distinguishing successful and unsuccessful argument
Premise markers
Since, because, for, as, given that
Conclusion markers
Therefore, then, thus, hence
Discounting
Nuspeti kritika ir ja atmest
anticipating criticism and dismissing it.
Guarding
Weakening the strength of your premises to guard it from attack
Sound
valid argument, which has true premises and true conclusion
Suppressed premise
Obvious facts (smoking is bad for your health)
Validity
If it is not possible that all premises are true but conclusion false
Conclusion must be true if all premises true
Deductive
Facts, neimanoma kad premises true o conclusion false (premises true, conclusion true)
Validity and soundness
Inductive
PROBABLY TRUE, retai buna true premises - false conclusion
Fallacy
argument that is logically incorrect.
. &. ~. X. C
C if X or ~ not . Therefore & and
Slippery slope
Comparing categories with vague definitions (Kategorijų palyginimas su neaiškiais apibrėžimais)
o If you go out with that kind of guy, you will get pregnant and end up dropping out of college.
o Either you stay in school or you won’t get a good job.
Equivocation
using a word with 2 different meanings.
o Man is the only rational animal, and no woman is a man, so women are not rational.
o Commonly used: freedom, democracy, equality.
Ad hominem
Uzpuolamas zmogus, o ne argumentas
o Bob has a criminal, so he is the one who stabbed the lady.
o Must look at the relevant information such as criminal records etc.
Joey says …
Joey is stupid
So x is false.
Guilt by assocation
Ad hominem
Ginčas užpuola asmenį dėl to, kad yra panašumo tarp argumentuojančio asmens ir kitų argumento šalininkų požiūrių.
Joe states that x is true.
Mary also believes that x is true and she is dumb. Therefore, Joe is dumb and wrong.
Ad hominem
Tu Quo Que
Attacking the opponent’s own personal behavior as being inconsistent with the argument’s conclusion(s). (hypocryte)
Your mom tells you not to smoke because it is bad for you, while smoking a cigarette
Appeal to authority
Zmones kurie apsimeta expertais
o Doctors recommends using this medicine.
o Need to be more specific with the authorities, can’t always trust them 100% with their authority.
Genetic
fallacy made based solely on someone’s or something’s history, origin, or source rather than its current meaning or context.
pagrįstas tik kažkieno ar kažko istorija, kilme ar šaltiniu, o ne dabartine prasme ar kontekstu.
Everything, that Nazis believed in, must be not true.
Straw men
misrepresenting an argument so it’s easier to attack. (neteisingai pateikiant argumentą, kad būtų lengviau pulti)
o People who don’t support abortion are pro – death penalty.
o Twisting someone’s words in order to get a new, absurd argument, which is easier to attack.
Circular argument
Relying on previous argument
o Using logic is important, because using logic is important.