Can a valid argument have false premises and a true conclusion?

Can a valid argument have false premises and a true conclusion?

A valid argument can have false premises; and it can have a false conclusion. But if a valid argument has all true premises, then it must have a true conclusion. Since a sound argument is valid, it is such that if all the premises are true then the conclusion must be true.

What are the claims that support the conclusion of an argument called?

A deductive argument claims that its conclusion is supported by its premises conclusively. A deductive argument is valid when, if its premises are true, its conclusion must be true.

What is a deductively valid argument?

A deductive argument is said to be valid if and only if it takes a form that makes it impossible for the premises to be true and the conclusion nevertheless to be false. In effect, an argument is valid if the truth of the premises logically guarantees the truth of the conclusion.

What is an argument’s conclusion?

A conclusion is a statement in an argument that indicates of what the arguer is trying to convince the reader/listener.

What does deductively valid mean?

An argument is deductively valid if, and only if, it’s not possible for it to be the case that both, 1) all of its premises are true and 2) it’s conclusion is false, as it were, at the same time. This will be our official definition of deductive validity.

What is an example of a valid argument with a false conclusion?

If Elizabeth Taylor is president of the United States, then Elizabeth Taylor must be younger than 35. Elizabeth Taylor is president of the United States. So, Elizabeth Taylor must be younger than 35. For either example, the logic is valid but the premises are false.

What is the purpose of an argument’s conclusion apex?

The purpose of a conclusion in an argument is to signal closure to the reader.

What is logic claim?

Argumentation Vocabulary A claim is an assertion about the truth, existence, or value of something that is either true or false. Claims are also called statements or propositions. When supported by premises, a claim becomes a conclusion.

What does deductive validity mean?

What is causal flaw?

The causal flaw is the assumption of cause. It is by far the most commonly- occurring type of logical fallacy appearing on the test. In sum, the Causal Flaw is the assumption that the relationship described in the argument is: 1. Not simple correlation; 2. Not some other cause, and; 3.

What is the meaning of argu?

1a : the act or process of arguing, reasoning, or discussing : argumentation. b : a coherent series of reasons, statements, or facts intended to support or establish a point of view a defense attorney’s closing argument. c : an angry quarrel or disagreement having an argument over/about money trying to settle an …

What is the meaning of Ductive?

/dɪˈdʌk.tɪv/ us. /dɪˈdʌk.tɪv/ reaching an answer or a decision by thinking carefully about the known facts: a deductive argument. deductive logic/reasoning.

Can a valid logical argument lead to a false conclusion?

However, if one or more premise is false then a valid logical argument may still lead to a false conclusion. A sound argument is one in which the logic is valid and the premises are true, in which case the conclusion must be true.

What are the premises of logical connection and conclusion?

Premise1: If A = B, Premise2: and B = C Logical connection: Then (apply principle of equivalence) Conclusion: A = C In order for an argument to be considered valid the logical form of the argument must work – must be valid. A valid argument is one in which, if the premises are true, then the conclusion must be true also.

Is it true that the conclusion of a deductive argument is true?

Yes. It is true that if the conclusion of a deductive argument is true, then the argument might be sound or it might be unsound. An argument is valid if and only if it is impossible for the premises to be true and the conclusion false. An argument is sound if and only if it is valid and the premises are in fact true.

What is the main proposition or conclusion of an argument?

the main proposition or conclusion. The conclusion of the argument is the claim that the writer or speaker is trying to convince another person to accept. In addition to a conclusion, an argument must have at least one reason offered in support of the conclusion. A proposition offered in support of a