Exam 1 Flashcards
(68 cards)
What is philosophy?
the study of the fundamental nature of knowledge, reality, and existence, especially when considered as an academic discipline.
Four main areas of philosophy? Subject of each area?
- Epistomology: concerned with the nature of knowledge, origin, and scope of knowledge.
- Metaphysics: the study of the most general aspects of reality, such as substance, identity, the nature of the mind, and free will. In other way is a study of nature and the nature of the world in which man lives
- Logic: The study of correct reasoning and arguments.
- Ethics: The study of morality. Making “correct” or “right” decisions.
Plato’s Allegory of the Cave
Chains = Our bodies
Being dragged from cave = education-philosophy
World outside of cave = the real world
Shadowy cave = what most of us think is the real world
Logical consistence?
If there is a logically possible instance in which all of the statements in a set are true. In other words, the set does not contain any contradictions.
Causally Possible
If it is possible for something to be true in this world only. IN other words, if something does not defy the laws of nature.
Logically Possible
If it is possible for something to be true in any other world. If you could make a movie about it. Statements do not contradict.
Definitions - why are they important? Lexical vs. Real
Lexical Definition: The lexical definition of a term, also known as the dictionary definition, is the meaning of the term in common usage.
Real Definition: Definition that explains the essential nature of a thing or phenomena.
Philosophers are concerned more with Real Definitions because they give more information that is used of philosophical reasoning.
Necessary and Sufficient Conditions
Implication about the the relationship between statements. Necessity: "You must have X for Y to happen." Having X does not guarantee Y, however having Y does mean you had to have had X. Example: Sunshine is needed for rose to bloom. However sunshine does not guarantee it blooming. Without sunshine, it will not bloom. Sufficiency: "Having X, guarantees having Y." Example: getting a 95% in a class is sufficient for getting an A in the class. This is because getting a 95% guarantees that you get an A. It is not necessary because you can also get a 92% to get an A.
Counterexample
A statement that defeats a universal claim by showing it to be false in some instance.
“All swans are white” can be defeated with a counterexample: evidence of a black swan.
Thought experiment
Devices of the imagination used to investigate the nature of things. They are used for diverse reasons in a variety of areas, including economics, history, mathematics, philosophy, and the sciences, especially physics.
Possible Worlds
Similar to parallel universes in that any situation could have gone in a variety of different ways. Children conceived could have never been, wars lost could have been won, decisions could have been made either way… Imaginary situations that could have happened
Arguments
An attempt to persuade someone of something, by giving reasons for accepting a particular conclusion as evident.
Premise Indicator
A word in an argument that “flags” the premise of the argument. For instance: “Because abortion is murder, it is always morally wrong.” the word ‘because’ is a premise indicator. Examples: because, since, given that, and for.
Conclusion Indicator
A word in an argument that “flags” the conclusion of the argument. For instance: “You aren’t in school, therefore you should get a job.” The word ‘therefore’ is a conclusion indicator. Examples: thus, hence, therefore, so, it follows that.
Deductive arguments
A deductive argument is one in which it is impossible for the premises to be true but the conclusion false. Thus, the conclusion follows necessarily from the premises and inferences.
Valid argument
Has to do with the “form” of the argument. Meaning that the premises need not be true, nor the conclusion. Only that IF they were true, the conclusion would also be true. If an argument has true premises, but a false conclusion it is invalid.
Sound Argument
An argument that is valid and has all true premises.
How do we evaluate deductive arguments?
We evaluate deductive arguments by looking at their soundness and validity.
What are inductive arguments? How do we evaluate them?
Inductive reasoning allows for the possibility that the conclusion is false, even if all of the premises are true. Instead of being valid or invalid, inductive arguments are either strong or weak, which describes how probable it is that the conclusion is true. Example: “The police said John committed the murder. So, John committed the murder.”
Modus Ponens
Latin for “mode that affirms”
- If P, then Q.
- P
- —————– - Therefore, Q
Modus Tollens
Latin for “mode that denies”
- If P, then Q.
- Not Q.
- —————– - Therefore, not P.
Disjunctive Syllogism
- Either Q or P.
- Not Q.
- ———————— - Therefore, P.
Hypothetical Syllogism
- If P, then Q.
- If Q, then R.
- ———————- - Therefore: if P, then R.
Enumerative Argument
An inductive argument that attempts to make a connection between a particular instance and all other instances. For example, if one observed 100 swans and those 100 were white swans, one might make the enumerative argument that all swans are white.
- Observed P are F.
- Therefore, all P are F.