What does inductive logic start with?
Observations to be used as evidence
What does deductive logic start with?
Given propositions or axioms
How is inductive logic evaluated?
Either strong or weak
What happens if the deductive logic is strong?
If it is properly set-up with true premises, it leads to a certain conclusion
Does deductive logic use A priori or A posteriori observations?
A priori
How is deductive logic evaluated?
Either valid or invalid
What happens if the inductive logic is strong?
If it has true premises, it leads to a probable, but not certain conclusion
Does inductive logic use A priori or A posteriori observations?
A posteriori
A priori
Reasoning or knowledge that proceeds from theoretical deduction rather than observation or experience
A posteriori
Reasoning or knowledge that proceeds from observations or experiences rather than from theoretical deduction
To imply
To use one truth to suggest another
To infer
Process by which one discovers the new truth implied by an old one
Axiom
A presupposition upon which an argument is based, but which may not be stated explicitly in the argument itself.
What are the two branches of deduction?
Categorical logic and propositional logic
Categorical logic
Logic used to define and categorize things in detailed and is made up of terms and the verb to be
Propositional Logic
Logic used to examine more complex thinking operations such as hypotheticals, either-or scenarios, or dilemmas
What is the formula for inductive logic?
Strength + True Premises = Cogency
Finish the sentence: if an inductive argument is strong…
it is unlikely that the premises be true while the conclusion false
Finish the sentence: if an inductive argument is weak…
it is not probable that the conclusion be true, even if the premises be
Argument by Analogy
Compares two or more things and then conclude based on the similarities and dissimilarities
Abductive reasoning
form of logical inference (inference to the best explanation)
What does abductive reasoning start with?
An observation or set of observations
What does abductive reasoning seek?
Simplest and most likely conclusion from the observations