# What Is A Tautological Statement?

## What is a tautology statement?

A tautology is a logical statement in which the conclusion is equivalent to the premise.

More colloquially, it is formula in propositional calculus which is always true (Simpson 1992, p.

2015; D’Angelo and West 2000, p.

33; Bronshtein and Semendyayev 2004, p.

288)..

## How do you prove a statement is a tautology?

If you are given any statement or argument, you can determine if it is a tautology by constructing a truth table for the statement and looking at the final column in the truth table. If all of the truth values in the final column are true, then the statement is a tautology.

## What is an example of pleonasm?

Example 1. I heard it with my own ears. When one hears something, we can presume it is with one’s own ears. The addition of “with my own ears” is a pleonasm.

## Why is tautology wrong?

The standard criticism of tautologies goes like this: because of the the fact that tautologies are necessarily true, they do not tell us anything new about the world. They cannot possibly be wrong; therefore, they do not add to our knowledge. They are redundancies, and they ultimately do not need to be stated.

## What is a Contrapositive statement?

The contrapositive of a statement is the switching of the hypothesis and the conclusion of a conditional statement and negating both.

noun. a statement or proposition that seems self-contradictory or absurd but in reality expresses a possible truth. a self-contradictory and false proposition. any person, thing, or situation exhibiting an apparently contradictory nature. an opinion or statement contrary to commonly accepted opinion.

## What is an example of tautology?

In grammatical terms, a tautology is when you use different words to repeat the same idea. For example, the phrase, “It was adequate enough,” is a tautology. The words adequate and enough are two words that convey the same meaning.

## What is the difference between tautology and pleonasm?

Pleonasm has a sense of using an unnecessary overabundance of redundant words in one description. Tautology has a sense of saying the exact same in different words, using multiple words with the same meaning.

## How do you get rid of tautology?

In order to avoid using tautologies, pay careful attention to the logic of what you are writing….How to Avoid TautologyRe-read and spot tautologies.Delete them, or.Change them to phrases that actually add some information to the first.

## How do you use tautology in a sentence?

Examples of tautology in a Sentence “A beginner who has just started” is a tautology.

## How do you negate a statement?

Negation of “If A, then B”. To negate a statement of the form “If A, then B” we should replace it with the statement “A and Not B”.

## Is tautology a figure of speech?

A tautology often involves just a few words in a sentence that have the same meaning, or in which one word is part of the definition of the other word. Though tautologies are common in everyday speech and don’t diminish clarity, they should be avoided in formal writing so you don’t repeat yourself unnecessarily.

## Why is tautology used?

Essentially, a tautology expresses the same thing, idea, or saying repeatedly. There are many reasons people use tautology in both everyday discussion and poetry, research papers, prose, and song lyrics. … Tautology can demonstrate derision, be used a poetic or literary device, or contain psychological significance.

## Is tautology a fallacy?

A tautology in math (and logic) is a compound statement (premise and conclusion) that always produces truth. No matter what the individual parts are, the result is a true statement; a tautology is always true. The opposite of a tautology is a contradiction or a fallacy, which is “always false”.

## What is the opposite of a tautology?

Tautology refers to a redundant use of language, “too many words”. The opposite of that would presumably be “not enough words”, excessive concision, terseness, insufficiency, curtness. 3. Contradiction refers to something going against something else.