Tautology is the use of different words to say the same thing twice in the same statement. ‘The money should be adequate enough’ is an example of tautology. Synonyms: repetition, redundancy, verbiage, iteration More Synonyms of tautology. COBUILD Advanced English Dictionary.
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.
What is the meaning of tautologies?
1a : needless repetition of an idea, statement, or word Rhetorical repetition, tautology (‘always and for ever’), banal metaphor, and short paragraphs are part of the jargon.— Philip Howard. b : an instance of such repetition The phrase “a beginner who has just started” is a tautology.
Is global pandemic a tautology?
The WHO definition is: “A pandemic is the worldwide spread of a new disease”. By that criterion, “global pandemic” would indeed seem to be a tautology. … It’s a term from ancient Greek, meaning literally “sharpdull,” so that it comes to symbolise words or phrases which contradict each other.
What is the difference between tautology and redundancy?
Redundancy is any kind of repetition: phrases, sentences, paragraphs, entire books, it’s all the same; the scale isn’t important. A tautology refers to phrasing that repeats a single meaning in identical words: They followed each other one after the other in succession.
How do you become a Tautologist?
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 is the opposite of tautology?
tautology. Antonyms: conciseness, brevity, laconism, compression. Synonyms: verbosity, redundancy, needless, repetition, pleonasm, reiteration.
Is tautology a fallacy?
Tautology Definition
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 difference between tautology and pleonasm?
A pleonasm relates to a specific word or phrase where there is redundancy (a “true fact”), whereas a tautology relates more to a logical argument or assertion being made, where it is self-evidently true (or unable to be falsified by logic), such as “I was definitely the oldest person at the meeting because everyone …
What is a tautological argument?
A tautological argument is otherwise known as a circular argument, that is, one that begins by assuming the very thing that is meant to be proven by the argument itself. … This appears to be a legitimate argument, but if we take it apart, there is not much substance there.
What does tautology mean in logic?
tautology, in logic, a statement so framed that it cannot be denied without inconsistency. Thus, “All humans are mammals” is held to assert with regard to anything whatsoever that either it is not a human or it is a mammal.
What are the types of tautologies and fallacies?
What is the difference between tautology and fallacy? If a logical compound statement always produces the truth (true value), then it is called a tautology. The opposite of tautology is called fallacy or contradiction, in which the compound statement is always false.
Are tautologies valid?
It is not originally defined in the context of premise-conclusion as you said. 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.
What is tautological implication?
A tautology (or theorem) is a formula that evaluates to T for every truth assignment. … A formula A logically implies B if A ⇒ B is a tautology. Theorem: An argument is valid iff the conjunction of its premises logically implies the conclusion. Proof: Suppose the argument is valid.
What is the word for saying the same thing twice?
In literary criticism and rhetoric, a tautology is a statement which repeats an idea, using near-synonymous morphemes, words or phrases, effectively “saying the same thing twice.” Tautology and pleonasm are not consistently differentiated in literature.
What is the word for two things that mean the same?
synonymous Add to list Share. If two words are synonymous, they mean the same thing.
What is a truth table in math?
A truth table is a mathematical table used in logic—specifically in connection with Boolean algebra, boolean functions, and propositional calculus—which sets out the functional values of logical expressions on each of their functional arguments, that is, for each combination of values taken by their logical variables.
What is difference contradiction and tautology?
A compound statement which is always true is called a tautology , while a compound statement which is always false is called a contradiction .
What is redundancy example?
An example of a redundancy is when a piece of text says the same exact thing twice. An example of a redundancy is when machines are no longer needed because they are obsolete and have been replaced by better versions. An example of redundancy is when people are put out-of-work because they aren’t necessary any longer.
What is a redundancy in grammar?
Redundancy is when you use more words than necessary to express something, especially words and/or phrases in the same sentence that mean the same thing.
What is tautology in social research?
A tautology is a proposition that is true by definition (such as ‘all mothers are female’) or one in which the same thing is said twice in different words (e.g. ‘they followed one after the other in succession’). explanatory context.