Law of Excluded Middle

The Law of Excluded Middle (LEM) is one of the three basic laws in classical logic.  It says "Statements are either true or false."  Or as have some put it, "A statement is true, or its negation is true.”  Some reject this law and assert that there is a third option; namely, that the truth or falsity of the statement can be unknown.  But, it would seem that being unknown does not negate the proposition that the statement is either true or false.  It just means its truth or falseness is not known.

 

 

 

 
 
CARM ison
 
 
CARM.org
Copyright 2014

CONTACT US:
CARM Office number: 208-466-1301
Office hours: M-F; 9-5 pm; Mountain Time
Email: [email protected]
Mailing Address: CARM, PO BOX 1353, Nampa ID 83653