Exam Reason & Logic Flashcards
Proposition
- statement that is true or false
- example - statement that is always true: The earth is spinning
- example - statement that is always false: I am dead
Laws of identity
- X is X
- things cannot have multiple identities
- a thing has to be a thing and nothing else
- “an apple is an apple”
Laws of non-contradiction
- Something cannot be true and false at the same time in the same way
- cannot be both
Laws of excluded middle
- something has to be either true or false
- cannot be sort of be true or false
- has to be one
Ockham’s razor
- it is likely that the simplest answer is true
- in coming up with a solution do not include unnecessary entities
- simplest does not mean not complex
Principle of Sufficient Reason/Principle of Charity
everything has a cause
Inductive Argument
Probably true if the premises are true
Deductive Argument
Always true if the premises are true
Bacon’s Four Idols of the Mind
- idols of the tribe
- idols of the cave
- idols of the marketplace
- idols of the theatre
arguer Fallacy: Ad Hominem
- attacking the arguer and not the argument
- Used when somebody insults the person instead of confronting the argument at hand
arguer Fallacy: Tradition (Argumentum ex Antiquitatem)
- We should continue to do this thing because we have always done so
- We should never/stop to this thing because we have always done so
Arguer Fallacy: Motive
- Tries to point out the motivation of the speaker
- usually done in a guilting way because they are trying to argue their side for a benefit for themselves
- Pointing out biases
Arguer Fallacy: Bandwagon (Argumentum ad Populum)
everybody is doing/thinking/saying it so therefore it must be just
Arguer Fallacy: Straw Man
- opposite of steelmanning
- Rewording and highlighting the weaknesses of their arguments for dismissal
Arguer Fallacy: Appeal to Pity (Argumentum ad Misericordiam)
- When you try to convince someone you are correct by getting them to feel sorry for you
- Trying to make somebody feel bad for you so they will agree
Arguer Fallacy: Appeal to Authority (Argumentum ad Verecundiam)
- When somebody has a position of authority in a field but stepping out of that field to pretend to be an expert in another
- Someone is able to convince people or something because they have authority or expertise in a different field
- Could be true but their argument should not fall back on the speaker’s expertise in another field
Argument Fallacy: Appeal to Ignorance
- If there is no evidence for the truth of something it must be false
- there is no evidence for the falsehood of this so it must be true
Argument Fallacy: Appeal to Circular Reasoning
When you end with the beginning or began with the end
Argument Fallacy: Equivocation
- Misinterpreting a word (purposefully/accidentally) being used when the speaker’s intentions were different
- anytime a phrase is misinterpreted
- make two things equal when they are not
Argument Fallacy: Loaded Term/Language
- Loaded language that has possible negative or positive bent
- non-loaded language is neutral that has synonyms to be loaded
Argument Fallacy: Slippery Slope
- your argument can be used to justify something else unfairly
- causal projection
- when you take something that is true and try to make an untrue conclusion
Relationships Fallacy: Accident
- occurs when you apply a rule to every situation without accepting an exception
- Exceptions are sometimes okay
- there are exceptions to rule
- opposite is hasty generalization
Relationships Fallacy: Hasty Generalization (converse accident)
- This rule is applied here so it should be applied across the board
- works for one situation but n0t for all
- making something widespread too quickly
Relationships Fallacy: Composition
- means putting something together
- occurs when you take the feature of all the parts of something and you apply it to the whole
- it is true about this part so therefore it is true to the whole
- the tires are rubber so the whole car is rubber