Thursday, December 13, 2018

The Three Laws Of Logic

1 comment:

  1. The Three Laws of Logic The three laws of logic may be stated different ways, depending on whether they refer to things, classes or propositions. Here is a formulation from a standard text on logic:
    1. The Law of Identity: For things, the law asserts that "A is A," or "anything is itself." For propositions: "If a proposition is true, then it is true."
    2. The Law of Excluded Middle: For things: "Anything is either A or not-A." For propositions: "A proposition, such as P, is either true or false."
    3. The Law of [Non-]Contradiction: For things: "Nothing can be both A and not-A." For propositions: "A proposition, P, cannot be both true and false."
    "The laws of logic are a precondition to reality. That if you think of reality (even imaginary) that you must presuppose the laws of logic".- (imymejubilee from YouTube in video entitled "Laws of Logic vs Quantum Theory")