Logic

Logic (from the Greek λογική, logikē)1 refers to both the study of modes of reasoning (which are valid and which are fallacious)2 and the use of valid reasoning. In the latter sense, logic is used in most intellectual activities, including philosophy and science, but in the first sense, is primarily studied in the disciplines of philosophy, mathematics, semantics, and computer science. It examines general forms that arguments may take. In mathematics, it is the study of valid inferences within some formal language.3 Logic is also studied in argumentation theory.4

Logic was studied in several ancient civilizations, including India,5 China,6 and Greece. In the west, logic was established as a formal discipline by Aristotle, who gave it a fundamental place in philosophy. The study of logic was part of the classical trivium, which also included grammar and rhetoric.

Logic is often divided into three parts, inductive reasoning, abductive reasoning, and deductive reasoning.

What are you working on Charles?
Oh, I am doing logic homework!

What is it about?
Oh, its a subject about reasoning in a logical manner, I am doing a proof that involves the transitive property of equality.

by david faustino November 7, 2012

logic error

The cause of any unexpected and undesired outcome. Usually attributable to a fundamental lack of understanding of the underlying situation. Most logic errors are minor logic errors.

If I jam a fork into this electrical outlet, money will come out.

by aero March 14, 2003

Logical Friday

Any day of the week, besides Friday, that is the last day of your work week due to scheduling, vacations, days off etc.

William: Dude, why are you wearing jeans to work today today, it isn't casual Friday, it's Wednesday.
Jack: Nah, it's logical Friday, I am outta here Thursday and Friday this week. TGILF!!

by Jake of Clubs June 5, 2010

pub logic

A warped method of reasoning and debate technique encountered primarily in the pub, whereby common sense and prior knowledge are overused at the expense of actual evidence and synopticity, caused mainly by alcohol intoxication. Resultant ideas, theories and conclusions range from the ridiculous to the surprisingly ingenious.

Tom: "Why is the music playing from the jukebox so crap?"
Dick: "I reckon they deliberately play crap songs, in order to make you pay to put on decent songs. Makes sense, right?"
Harry: "That's a dodgy bit of pub logic!"

by RightSaidJames June 26, 2008

quito logic

A series of circumstances that do not follow the logic of science in any way, shape, or form.

Correcting someone about what you were wearing at an event in which you stated you were not at is quito logic

by quito logic May 12, 2014

Junkie logic

Junkie logic is the logic used by junkies. It has several characteristics that distinguish it from normal logic. These include: a reliance on irrelevant information to support an argument, combining multiple unrelated assertions, and jumping to conclusions not based on fact or reality. Junkie logic is often self-serving, and the user can rationalize away even the most convincing evidence against them.

Max: "Hey James, I know you said that the world is round, but maybe that's just because it's from your perspective. I mean, from my perspective, it's all relative, you know? It's like, if I think that the world is flat, then it's flat. But if I think it's round, it's round. So you can't really say whether it's flat or round, it just depends on which on you choose."

James: "Man, get out of here with that junkie logic."

by Macattaq June 3, 2015

Wesamian Logic

Invented in 2016, Wesamian Logic takes advantage of stupidity and applies it in a positive sense to allow for conversations that ironically, contain no logic.

Wesam: "Get me an empty cup while you're at Starbucks"
Other: "I can't, its 25 cents and I'm broke"
Wesam: "Just play some sick 50 cent beats, and they'll give you two cups"
Other: "Wow, why doesn't the rest of the world apply Wesamian Logic?"

by FuckRubesh November 23, 2016