Philosophy Flashcards
What is a syllogism in formal logic?
A syllogism is a form of reasoning where a conclusion is drawn from two premises. For example, if “All men are mortal” and “Socrates is a man,” the conclusion is “Socrates is mortal”.
What is rationalism in philosophy?
Rationalism is the belief that knowledge can be gained through the use of reason and formal logic, without needing empirical evidence.
What is empiricism in philosophy?
Empiricism is the philosophical view that knowledge comes primarily from sensory experience and empirical evidence.
What is the difference between a conjunction and a disjunction in logic?
A conjunction (P and Q) is only true when both P and Q are true, while a disjunction (P or Q) is true when at least one of P or Q is true
What is a truth table in formal logic?
A truth table is a mathematical table used to determine the truth values of logical expressions based on the values of their components (true or false)
What is dualism, as proposed by Rene Descartes?
Dualism is the theory that the mind and body are separate entities, with the mind being non-physical and the body being physical
What is the pineal gland’s role according to Descartes’ dualism?
Descartes believed the pineal gland was the communication hub between the non-physical mind and the physical brain
What is formal logic?
Formal logic is a system of reasoning where statements are analyzed for their truth or falsehood using structured symbols and rules, like in syllogisms and truth tables.
What is a conjunction in logic?
A conjunction is a logical operation where two statements are both required to be true for the entire expression to be true (e.g., “P and Q”)
What are all of the logical operations used in formal logic?
AND (Conjunction)
Symbol: ∧
Description: A conjunction is true only if both propositions (P and Q) are true.
Example: P ∧ Q is true if both P and Q are true.
OR (Disjunction)
Symbol: ∨
Description: A disjunction is true if at least one of the propositions (P or Q) is true.
Example: P ∨ Q is true if either P or Q (or both) are true.
NOT (Negation)
Symbol: ¬
Description: Negation reverses the truth value of a proposition.
Example: ¬P is true if P is false, and ¬P is false if P is true.
IF-THEN (Conditional)
Symbol: →
Description: A conditional statement is true unless the first proposition (P) is true and the second (Q) is false.
Example: P → Q is false only if P is true and Q is false.
IF AND ONLY IF (Biconditional)
Symbol: ↔
Description: A biconditional is true when both propositions (P and Q) have the same truth value.
Example: P ↔ Q is true if both P and Q are either true or false.
XOR (Exclusive OR)
Symbol: ⊕
Description: Exclusive OR is true if either P or Q is true, but not both.
Example: P ⊕ Q is true if exactly one of P or Q is true.
What is a disjunction in logic?
A disjunction is a logical operation where at least one of two statements needs to be true for the expression to be true (e.g., “P or Q”)
What is negation in formal logic?
Negation is a logical operation that reverses the truth value of a statement. If a statement is true, its negation is false, and vice versa
What is the principle of conditional (if-then) logic?
Conditional logic involves statements where the truth of one proposition depends on the truth of another. In “If P, then Q,” Q is true only if P is true
What is the concept of “combinatorial explosion”?
Combinatorial explosion refers to the exponential growth in the number of combinations of truth values as more propositions are added to a truth table
What is dualism in philosophy?
Dualism, proposed by Rene Descartes, is the belief that the mind consists of two distinct entities: the physical brain and the non-physical mind or soul