Law of noncontradiction
In logic, the law of non-contradiction( LNC)( also known as the law of contradiction, principle of non-contradiction( PNC), or the principle of contradiction) states that contradictory propositions can not both be true in the same sense at the same time, e. g. the two propositions A is B and A is not B are mutually exclusive.
Formally this is expressed as the tautology ¬( p ∧ ¬p).
One reason to have this law is the principle of explosion, which states that anything follows from a contradiction.
The law is employed in a reductio ad absurdum proof.
To express the fact that the law is tenseless and to avoid equivocation, sometimes the law is amended to say" contradictory propositions can not both be true' at the same time and in the same sense'".
It is one of the so called three laws of thought, along with its complement, the law of excluded middle, and the law of identity.
The law of noncontradiction is logically equivalent to the law of excluded middle by De Morgan's laws.
However, no system of logic is built on just these laws, and none of these laws provide inference rules, such as modus ponens or De Morgan's laws.
The law of non contradiction and the law of excluded middle create a dichotomy in" logical space", wherein the two parts are" mutually exclusive" and" jointly exhaustive".
The law of non-contradiction is merely an expression of the mutually exclusive aspect of that dichotomy, and the law of excluded middle, an expression of its jointly exhaustive aspect.
The Tong Man
The Tong Man is a 1919 American thriller film directed by William Worthington and produced by Haworth Pictures Corporation.
" The Tong Man" survives and is available on home video.
The film has long been preserved by the Library of Congress.
The Sound of Music (disambiguation)
The Sound of Music is a 1959 musical by Rodgers and Hammerstein.
The Sound of Music may also refer to:
The Law of the Tong
The Law of the Tong is a 1931 American crime film directed by Lewis D. Collins and starring Phyllis Barrington, John Harron and Jason Robards Sr..
The Sound of Silence (disambiguation)
" The Sound of Silence" is a song by Simon and Garfunkel.
The Sound of Silence or Sounds of Silence may also refer to:
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The Sound of Violence may refer to:
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The Sound of Fury may refer to:
The Sound of Silence (2019 film)
The Sound of Silence is a 2019 American drama film directed by Michael Tyburski.
It was screened in the U.S. Dramatic Competition section at the 2019 Sundance Film Festival.
The plot centers on Peter Lucian, played by Peter Sarsgaard, a" house tuner," working on the sonic environment of homes.
It was released on September 13, 2019, by IFC Films.
Law of Five
The Law of Five may refer to:
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The Sound of Silence is a 1968 studio album by Carmen McRae, produced by Joel Dorn.

Question: Are both The Law of the Tong and The Sound of Silence (2019 film) from the same country?
Answer: yes