The science and art of reasoning well.
Excluded Middle Law
Any statement is either true or false.
If a statement is true, then it is true.
A statement cannot be both true and false.
A concept that can be expressed precisely.
A statement that gives the meaning of a term.
Has more than one definition.
genus of a term
A term that is more general, broad, or abstract than the original term and includes it.
species of a term
A term that is more specific, narrow, or concrete than the original term and is included by it.
TYPES of definitions
lexical, precising, stipulative, theoretical, and persuasive.
Species should be ____________, and may be a(n) ___________________ list.
mutually exclusive, exhaustive
extension of a term
The sum of all the individual objects described by it.
intension of a term
The sum of all the common attributes denoted by the term.
Extension and intension are _____________ related.
As extension ______________, intension _______________, and vice versa
METHODS of defining terms
by synonym, by example, by genus and difference