Quick Answer: Why Is Tautology Used?

What is tautology in writing?

A tautology is an expression or phrase that says the same thing twice, just in a different way.

For this reason, a tautology is usually undesirable, as it can make you sound wordier than you need to be, and make you appear foolish..

Are tautologies bad in writing?

Within rhetoric, a tautology is when someone (often unintentionally) says the same thing through two different phrases, sometimes within the same sentence. This kind of tautology is usually considered problematic and a sign of bad writing style. Within logic, though, a tautology is just an inherently true statement.

Is math a tautology?

Tautology is a term used in logic to denote a statement that is true regardless of the values assigned to its variables, or its interpretation. Mathematical statements aren’t statements of logic (at last not the ones that consist of stuff other than logic, when we consider logic to be a branch of mathematics).

How do you use tautology in a sentence?

Tautology in a Sentence 🔉The politician’s advertisement was simply tautology he restated several times within a thirty second period. … When the lawyer spoke to the jury, he used tautology to make the jurors aware of his point without being repetitive.More items…

Is a tautology valid?

A ‘tautological sentence’ is one that is always true regardless of the truth of ‘atomic sentences (ex. … However, it can be proven that tautological sentences as defined previously is always the ‘true conclusion’ of any argument regardless of truth of the premises. Therefore, tautology is always valid.

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.

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 I find tautology?

If you are given a statement and want to determine if it is a tautology, then all you need to do is construct a truth table for the statement and look at the truth values in the final column. If all of the values are T (for true), then the statement is a tautology.

What does tautological mean?

1 : involving or containing rhetorical tautology : redundant. 2 : true by virtue of its logical form alone. Other Words from tautological Example Sentences Learn More about tautological.

What does tautology mean in logic?

In logic, a tautology (from Greek: ταυτολογία) is a formula or assertion that is true in every possible interpretation. An example is “x=y or x≠y”. A less abstract example is “The ball is all green, or the ball is not all green”.

Is logic always true?

Tags: In logic, an argument can be invalid even if its conclusion is true, and an argument can be valid even if its conclusion is false. All of the premises are true, and so is the conclusion, but it’s not a valid argument. …

What is the purpose 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.

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 the paradox?

A paradox, also known as an antinomy, is a logically self-contradictory statement or a statement that runs contrary to one’s expectation. It is a statement that, despite apparently valid reasoning from true premises, leads to a seemingly self-contradictory or a logically unacceptable conclusion.

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.

What is a tautological argument?

A tautological argument is an example of circular argumentation. The premise and the conclusion are one and the same. The argument appears as in the form of both a proposition and its logical conclusion that is one and the same.